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[ "Same for the RACE dataset: https://github.com/huggingface/nlp/blob/master/datasets/race/race.py\r\n\r\nShould we scan all the datasets to remove this pattern of un-necessary nesting?", "You're right, I think we don't need to use the nested dictionary. \r\n" ]

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[ "**Edit**: other topic previously in this message moved to a new issue: https://github.com/huggingface/nlp/issues/387", "Could you try to update pyarrow to >=0.17.0 ? It should fix the `to_pandas` bug\r\n\r\nAlso I'm not sure that structures like list<struct> are fully supported in the lib (none of the datasets use that).\r\nIt can cause issues when using dataset transforms like `filter` for example" ]

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[ "I am not able to reproduce this issue on my side.\r\nCould you give us more details about the inputs you used ?\r\n\r\nI do get another error though:\r\n```\r\n~/.virtualenvs/hf-datasets/lib/python3.7/site-packages/bert_score/utils.py in bert_cos_score_idf(model, refs, hyps, tokenizer, idf_dict, verbose, batch_size, device, all_layers)\r\n 371 return sorted(list(set(l)), key=lambda x: len(x.split(\" \")))\r\n 372 \r\n--> 373 sentences = dedup_and_sort(refs + hyps)\r\n 374 embs = []\r\n 375 iter_range = range(0, len(sentences), batch_size)\r\n\r\nValueError: operands could not be broadcast together with shapes (0,) (2,)\r\n```\r\nThat's because it gets numpy arrays as input and not lists. See #387 ", "The other issue was fixed by #403 \r\n\r\nDo you still get this issue @willywsm1013 ?\r\n" ]

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[ "I changed the `wiki_dpr` script to ignore the last 24 examples for now. Hopefully we'll have the full version soon.\r\nThe datasets_infos.json and the data on GCS are updated.\r\n\r\nAnd I also added a check to make sure we don't have post processing resources in sub-directories.", "I added a dummy config that can be loaded with:\r\n```python\r\nwiki = load_dataset(\"wiki_dpr\", \"dummy_psgs_w100_no_embeddings\", with_index=True, split=\"train\")\r\n```\r\nIt's only 6MB of arrow files and 30MB of index" ]

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[ "I've seen this sort of thing before -- it might help to delete the directory -- I've also noticed that there is an error with the json Dataloader for any data I've tried to load. I've replaced it with this, which skips over the data feature population step:\r\n\r\n\r\n```python\r\nimport os\r\n\r\nimport pyarrow.json as paj\r\n\r\nimport nlp as hf_nlp\r\n\r\nfrom nlp import DatasetInfo, BuilderConfig, SplitGenerator, Split, utils\r\nfrom nlp.arrow_writer import ArrowWriter\r\n\r\n\r\nclass JSONDatasetBuilder(hf_nlp.ArrowBasedBuilder):\r\n BUILDER_CONFIG_CLASS = BuilderConfig\r\n\r\n def _info(self):\r\n return DatasetInfo()\r\n\r\n def _split_generators(self, dl_manager):\r\n \"\"\" We handle string, list and dicts in datafiles\r\n \"\"\"\r\n if isinstance(self.config.data_files, (str, list, tuple)):\r\n files = self.config.data_files\r\n if isinstance(files, str):\r\n files = [files]\r\n return [SplitGenerator(name=Split.TRAIN, gen_kwargs={\"files\": files})]\r\n splits = []\r\n for split_name in [Split.TRAIN, Split.VALIDATION, Split.TEST]:\r\n if split_name in self.config.data_files:\r\n files = self.config.data_files[split_name]\r\n if isinstance(files, str):\r\n files = [files]\r\n splits.append(SplitGenerator(name=split_name, gen_kwargs={\"files\": files}))\r\n return splits\r\n\r\n def _prepare_split(self, split_generator):\r\n fname = \"{}-{}.arrow\".format(self.name, split_generator.name)\r\n fpath = os.path.join(self._cache_dir, fname)\r\n\r\n writer = ArrowWriter(path=fpath)\r\n\r\n generator = self._generate_tables(**split_generator.gen_kwargs)\r\n for key, table in utils.tqdm(generator, unit=\" tables\", leave=False):\r\n writer.write_table(table)\r\n num_examples, num_bytes = writer.finalize()\r\n\r\n split_generator.split_info.num_examples = num_examples\r\n split_generator.split_info.num_bytes = num_bytes\r\n\r\n def _generate_tables(self, files):\r\n for i, file in enumerate(files):\r\n pa_table = paj.read_json(\r\n file\r\n )\r\n yield i, pa_table\r\n\r\n```", "Yes, deleting the directory solves the error whenever I try to rerun.\r\n\r\nBy replacing the json-loader, you mean the cached file in my `site-packages` directory? e.g. `/home/XXX/.cache/lib/python3.7/site-packages/nlp/datasets/json/(...)/json.py` \r\n\r\nWhen I was testing this out before the #372 PR was merged I had issues installing it properly locally. Since the `json.py` script was downloaded instead of actually using the one provided in the local install. Manually updating that file seemed to solve it, but it didn't seem like a proper solution. Especially when having to run this on a remote compute cluster with no access to that directory.", "I see, diving in the JSON file for SQuAD it's a pretty complex structure.\r\n\r\nThe best solution for you, if you have a dataset really similar to SQuAD would be to copy and modify the SQuAD data processing script. We will probably add soon an option to be able to specify file path to use instead of the automatic URL encoded in the script but in the meantime you can:\r\n- copy the [squad script](https://github.com/huggingface/nlp/blob/master/datasets/squad/squad.py) in a new script for your dataset\r\n- in the new script replace [these `urls_to_download `](https://github.com/huggingface/nlp/blob/master/datasets/squad/squad.py#L99-L102) by `urls_to_download=self.config.data_files`\r\n- load the dataset with `dataset = load_dataset('path/to/your/new/script', data_files={nlp.Split.TRAIN: \"./datasets/train-v2.0.json\"})`\r\n\r\nThis way you can reuse all the processing logic of the SQuAD loading script.", "This seems like a more sensible solution! Thanks, @thomwolf. It's been a little daunting to understand what these scripts actually do, due to the level of abstraction and central documentation.\r\n\r\nAm I correct in assuming that the `_generate_examples()` function is the actual procedure for how the data is loaded from file? Meaning that essentially with a file containing another format, that is the only function that requires re-implementation? I'm working with a lot of datasets that, due to licensing and privacy, cannot be published. As this library is so neatly integrated with the transformers library and gives easy access to public sets such as SQUAD and increased performance, it is very neat to be able to load my private sets as well. As of now, I have just been working on scripts for translating all my data into the SQUAD-format before using the json script, but I see that it might not be necessary after all. ", "Yes `_generate_examples()` is the main entry point. If you change the shape of the returned dictionary you also need to update the `features` in the `_info`.\r\n\r\nI'm currently writing the doc so it should be easier soon to use the library and know how to add your datasets.\r\n", "Could you try to update pyarrow to >=0.17.0 @vegarab ?\r\nI don't have any segmentation fault with my version of pyarrow (0.17.1)\r\n\r\nI tested with\r\n```python\r\nimport nlp\r\ns = nlp.load_dataset(\"json\", data_files=\"train-v2.0.json\", field=\"data\", split=\"train\")\r\ns[0]\r\n# {'title': 'Normans', 'paragraphs': [{'qas': [{'question': 'In what country is Normandy located?', 'id':...\r\n```", "Also if you want to have your own dataset script, we now have a new documentation !\r\nSee here:\r\nhttps://huggingface.co/nlp/add_dataset.html", "@lhoestq \r\nFor some reason, I am not able to reproduce the segmentation fault, on pyarrow==0.16.0. Using the exact same environment and file.\r\n\r\nAnyhow, I discovered that pyarrow>=0.17.0 is required to read in a JSON file where the pandas structs contain lists. Otherwise, pyarrow complains when attempting to cast the struct:\r\n```py\r\nimport nlp\r\n>>> s = nlp.load_dataset(\"json\", data_files=\"datasets/train-v2.0.json\", field=\"data\", split=\"train\")\r\nUsing custom data configuration default\r\n>>> s[0]\r\nTraceback (most recent call last):\r\n File \"<stdin>\", line 1, in <module>\r\n File \"/home/vegarab/.conda/envs/torch/lib/python3.7/site-packages/nlp/arrow_dataset.py\", line 558, in __getitem__\r\n format_kwargs=self._format_kwargs,\r\n File \"/home/vegarab/.conda/envs/torch/lib/python3.7/site-packages/nlp/arrow_dataset.py\", line 498, in _getitem\r\n outputs = self._unnest(self._data.slice(key, 1).to_pandas().to_dict(\"list\"))\r\n File \"pyarrow/array.pxi\", line 559, in pyarrow.lib._PandasConvertible.to_pandas\r\n File \"pyarrow/table.pxi\", line 1367, in pyarrow.lib.Table._to_pandas\r\n File \"/home/vegarab/.conda/envs/torch/lib/python3.7/site-packages/pyarrow/pandas_compat.py\", line 766, in table_to_blockmanager\r\n blocks = _table_to_blocks(options, table, categories, ext_columns_dtypes)\r\n File \"/home/vegarab/.conda/envs/torch/lib/python3.7/site-packages/pyarrow/pandas_compat.py\", line 1101, in _table_to_blocks\r\n list(extension_columns.keys()))\r\n File \"pyarrow/table.pxi\", line 881, in pyarrow.lib.table_to_blocks\r\n File \"pyarrow/error.pxi\", line 105, in pyarrow.lib.check_status\r\npyarrow.lib.ArrowNotImplementedError: Not implemented type for Arrow list to pandas: struct<qas: list<item: struct<question: string, id: string, answers: list<item: struct<text: string, answer_start: int64>>, is_impossible: bool, plausible_answers: list<item: struct<text: string, answer_start: int64>>>>, context: string>\r\n>>> s\r\nDataset(schema: {'title': 'string', 'paragraphs': 'list<item: struct<qas: list<item: struct<question: string, id: string, answers: list<item: struct<text: string, answer_start: int64>>, is_impossible: bool, plausible_answers: list<item: struct<text: string, answer_start: int64>>>>, context: string>>'}, num_rows: 35)\r\n```\r\n\r\nUpgrading to >=0.17.0 provides the same dataset structure, but accessing the records is possible without the same exception. \r\n\r\n", "Very happy to see some extended documentation! ", "#376 seems to be reporting the same issue as mentioned above. ", "This issue helped me a lot, thanks.\r\nHope this issue will be fixed soon." ]

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[ "Thanks for the fast fix!" ]

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[ "Looks like a flaky CI, failed download from S3." ]

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[ "I am able to reproduce this with the official SQuAD `train-v2.0.json` file downloaded directly from https://rajpurkar.github.io/SQuAD-explorer/", "I am facing this issue in transformers library 3.0.2 while reading a csv using datasets.\r\nIs this fixed in latest version? \r\nI updated the latest version 4.0.1 but still getting this error. What could cause this error?" ]

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[ "I found that, in the same process (or the same interactive session), if I do\r\n\r\nimport nlp\r\n\r\nm1 = nlp.load_metric('glue', 'mrpc')\r\nm2 = nlp.load_metric('glue', 'sst2')\r\n\r\nI will get the same error `ValueError: Cannot acquire lock, caching file might be used by another process, you should setup a unique 'experiment_id'`." ]

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[ "Tests seem to be failing because of pandas", "Kaggle needs authentification to download datasets. We don't have a way to handle that in the lib for now" ]

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[ "Using batched map is probably the easiest way at the moment.\r\nWhat kind of augmentation would you like to do ?", "Some samples in the dataset are too long, I want to divide them in several samples.", "Using batched map is the way to go then.\r\nWe'll make it clearer in the docs that map could be used for augmentation.\r\n\r\nLet me know if you think there should be another way to do it. Or feel free to close the issue otherwise.", "It just feels awkward to use map to augment data. Also it means it's not possible to augment data in a non-batched way.\r\n\r\nBut to be honest I have no idea of a good API...", "Or for non-batched samples, how about returning a tuple ?\r\n\r\n```python\r\ndef aug(sample):\r\n # Simply copy the existing data to have x2 amount of data\r\n return sample, sample\r\n\r\ndataset = dataset.map(aug)\r\n```\r\n\r\nIt feels really natural and easy, but :\r\n\r\n* it means the behavior with batched data is different\r\n* I don't know how doable it is backend-wise\r\n\r\n@lhoestq ", "As we're working with arrow's columnar format we prefer to play with batches that are dictionaries instead of tuples.\r\nIf we have tuple it implies to re-format the data each time we want to write to arrow, which can lower the speed of map for example.\r\n\r\nIt's also a matter of coherence, as we don't want users to be confused whether they have to return dictionaries for some functions and tuples for others when they're doing batches." ]

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[ "The dummy data for v2.1 is missing as far as I can see. I think running the dummy data command should work correctly here. ", "Also, it might be that the structure of the dummy data is wrong - looking at `generate_examples` the structure does not look too easy.", "The fact that the dummy data for v2.1 is missing shouldn't make the test fails I think. But as you mention the dummy data structure of v1.1 is wrong. I tried to rename files but it does not solve the issue.", "Is MS mARCO added to nlp library?I am not able to view it?", "> Is MS mARCO added to nlp library?I am not able to view it?\r\n\r\nHi @parthplc ,the PR is not merged yet. The dummy data structure is still failing. Maybe @patrickvonplaten can help with it.", "Dataset is fixed and should be ready for use. @mariamabarham @lhoestq feel free to merge whenever!", "> Dataset is fixed and should be ready for use. @mariamabarham @lhoestq feel free to merge whenever!\r\n\r\nthanks" ]

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[ "Thank you! I just marked this as a draft PR. It probably would be better to create specific Array2D and Array3D classes as needed instead of a generic MultiArray for now, it should simplify the code a lot too so, I'll update it as such. Also i was meaning to reply earlier, but I wanted to thank you for the testing script you sent me earlier since it ended up being tremendously helpful. ", "Okay, I just converted the MultiArray class to Array2D, and got rid of all those \"globals()\"! \r\n\r\nThe main issues I had were that when including a \"pa.ExtensionType\" as a column, the ordinary methods to batch the data would not work and it would throw me some mysterious error, so I first cleaned up my code to order the row to match the schema (because when including extension types the row is disordered ) and then made each row a pa.Table and then concatenated all the tables. Also each n-dimensional vector class we implement will be size invariant which is some good news. ", "Okay awesome! I just added your suggestions and changed up my recursive functions. \r\n\r\nHere is the traceback for the when I use the original code in the write_on_file method:\r\n\r\n```\r\nTraceback (most recent call last):\r\n File \"<stdin>\", line 33, in <module>\r\n File \"/home/eltoto/nlp/src/nlp/arrow_writer.py\", line 214, in finalize\r\n self.write_on_file()\r\n File \"/home/eltoto/nlp/src/nlp/arrow_writer.py\", line 134, in write_on_file\r\n pa_array = pa.array(self.current_rows, type=self._type)\r\n File \"pyarrow/array.pxi\", line 269, in pyarrow.lib.array\r\n File \"pyarrow/array.pxi\", line 38, in pyarrow.lib._sequence_to_array\r\n File \"pyarrow/error.pxi\", line 106, in pyarrow.lib.check_status\r\npyarrow.lib.ArrowNotImplementedError: MakeBuilder: cannot construct builder for type extension<arrow.py_extension_type>\r\n\r\nshell returned 1\r\n```\r\n\r\nI think when trying to cast an extension array within a list of dictionaries, some method gets called that bugs out Arrow and somehow doesn't get called when adding a single row to a a table and then appending multiple tables together. I tinkered with this for a while but could not find any workaround. \r\n\r\nIn the case that this new method causes bad compression/worse performance, we can explicitly set the batch size in the pa.Table.to_batches(***batch_size***) method, which will return a list of batches. Perhaps, we can check that the batch size is not too large converting the table to batches after X many rows are appended to it by following the batch_size check below.", "> I think when trying to cast an extension array within a list of dictionaries, some method gets called that bugs out Arrow and somehow doesn't get called when adding a single row to a a table and then appending multiple tables together. I tinkered with this for a while but could not find any workaround.\r\n\r\nIndeed that's weird.\r\n\r\n> In the case that this new method causes bad compression/worse performance, we can explicitly set the batch size in the pa.Table.to_batches(batch_size) method, which will return a list of batches. Perhaps, we can check that the batch size is not too large converting the table to batches after X many rows are appended to it by following the batch_size check below.\r\n\r\nThe argument of `pa.Table.to_batches` is not `batch_size` but `max_chunksize`, which means that right now it would have no effects (each chunk is of length 1).\r\n\r\nWe can fix that just by doing `entries.combine_chunks().to_batches(batch_size)`. In that case it would write by chunk of 1000 which is what we want. I don't think it will slow down the writing by much, but we may have to do a benchmark just to make sure. If speed is ok we could even replace the original code to always write chunks this way.\r\n\r\nDo you still have errors that need to be fixed ?", "@lhoestq Nope all should be good! \r\n\r\nWould you like me to add the entries.combine_chunks().to_batch_size() code + benchmark?", "> @lhoestq Nope all should be good!\r\n\r\nAwesome :)\r\n\r\nI think it would be good to start to add some tests then.\r\nYou already have `test_multi_array.py` which is a good start, maybe you can place it in /tests and make it a `unittest.TestCase` ?\r\n\r\n> Would you like me to add the entries.combine_chunks().to_batch_size() code + benchmark?\r\n\r\nThat would be interesting. We don't want reading/writing to be the bottleneck of dataset processing for example in terms of speed. Maybe we could test the write + read speed of different datasets:\r\n- write speed + read speed a dataset with `nlp.Array2D` features\r\n- write speed + read speed a dataset with `nlp.Sequence(nlp.Sequence(nlp.Value(\"float32\")))` features\r\n- write speed + read speed a dataset with `nlp.Sequence(nlp.Value(\"float32\"))` features (same data but flatten)\r\nIt will be interesting to see the influence of `.combine_chunks()` on the `Array2D` test too.\r\n\r\nWhat do you think ?", "Well actually it looks like we're still having the `print(dataset[0])` error no ?", "I just tested your code to try to understand better.\r\n\r\n\r\n- First thing you must know is that we've switched from `dataset._data.to_pandas` to `dataset._data.to_pydict` by default when we call `dataset[0]` in #423 . Right now it raises an error but it can be fixed by adding this method to `ExtensionArray2D`:\r\n\r\n```python\r\n def to_pylist(self):\r\n return self.to_numpy().tolist()\r\n```\r\n\r\n- Second, I noticed that `ExtensionArray2D.to_numpy()` always return a (5, 5) shape in your example. I thought `ExtensionArray` was for possibly multiple examples and so I was expecting a shape like (1, 5, 5) for example. Did I miss something ?\r\nTherefore when I apply the fix I mentioned (adding to_pylist), it returns one example per row in each image (in your example of 2 images of shape 5x5, I get `len(dataset._data.to_pydict()[\"image\"]) == 10 # True`)\r\n\r\n[EDIT] I changed the reshape step in `ExtensionArray2D.to_numpy()` by\r\n```python\r\nnumpy_arr = numpy_arr.reshape(len(self), *ExtensionArray2D._construct_shape(self.storage))\r\n```\r\nand it did the job: `len(dataset._data.to_pydict()[\"image\"]) == 2 # True`\r\n\r\n- Finally, I was able to make `to_pandas` work though, by implementing custom array dtype in pandas with arrow conversion (I got inspiration from [here](https://gist.github.com/Eastsun/a59fb0438f65e8643cd61d8c98ec4c08) and [here](https://pandas.pydata.org/pandas-docs/version/1.0.0/development/extending.html#compatibility-with-apache-arrow))\r\n\r\nMaybe you could add me in your repo so I can open a PR to add these changes to your branch ?", "`combine_chunks` doesn't seem to work btw:\r\n`ArrowNotImplementedError: concatenation of extension<arrow.py_extension_type>`", "> > @lhoestq Nope all should be good!\r\n> \r\n> Awesome :)\r\n> \r\n> I think it would be good to start to add some tests then.\r\n> You already have `test_multi_array.py` which is a good start, maybe you can place it in /tests and make it a `unittest.TestCase` ?\r\n> \r\n> > Would you like me to add the entries.combine_chunks().to_batch_size() code + benchmark?\r\n> \r\n> That would be interesting. We don't want reading/writing to be the bottleneck of dataset processing for example in terms of speed. Maybe we could test the write + read speed of different datasets:\r\n> \r\n> * write speed + read speed a dataset with `nlp.Array2D` features\r\n> * write speed + read speed a dataset with `nlp.Sequence(nlp.Sequence(nlp.Value(\"float32\")))` features\r\n> * write speed + read speed a dataset with `nlp.Sequence(nlp.Value(\"float32\"))` features (same data but flatten)\r\n> It will be interesting to see the influence of `.combine_chunks()` on the `Array2D` test too.\r\n> \r\n> What do you think ?\r\n\r\nYa! that should be no problem at all, Ill use the timeit module and get back to you with the results sometime over the weekend.", "Thank you for all your help getting the pandas and row indexing for the dataset to work! For `print(dataset[0])`, I considered the workaround of doing `print(dataset[\"col_name\"][0])` a temporary solution, but ya, I was never able to figure out how to previously get it to work. I'll add you to my repo right now, let me know if you do not see the invite. Also lastly, it is strange how the to_batches method is not working, so I can check that out while I add some speed tests + add the multi dim test under the unit tests this weekend. ", "I created the PR :)\r\nI also tested `to_batches` and it works on my side", "Sorry for the bit of delay! I just added the tests, the PR into my fork, and some speed tests. It should be fairly easy to add more tests if we need. Do you think there is anything else to checkout?", "Cool thanks for adding the tests :) \r\n\r\nNext step is merge master into this branch.\r\nNot sure I understand what you did in your last commit, but it looks like you discarded all the changes from master ^^'\r\n\r\nWe've done some changes in the features logic on master, so let me know if you need help merging it.\r\n\r\nAs soon as we've merged from master, we'll have to make sure that we have extensive tests and we'll be good to do !\r\nAbout the lxmert dataset, we can probably keep it for another PR as soon as we have working 2d features. What do you think ?", "We might want to merge this after tomorrow's release though to avoid potential side effects @lhoestq ", "Yep I'm sure we can have it not for tomorrow's release but for the next one ;)", "haha, when I tried to rebase, I ran into some conflicts. In that last commit, I restored the features.py from the previous commit on the branch in my fork because upon updating to master, the pandasdtypemanger and pandas extension types disappeared. If you actually could help me with merging in what is needed, that would actually help a lot. \r\n\r\nOther than that, ya let me go ahead and move the dataloader code out of this PR. Perhaps we could discuss in the slack channelk soon about what to do with that because we can either just support the pretraining corpus for lxmert or try to implement the full COCO and visual genome datasets (+VQA +GQA) which im sure people would be pretty happy about. \r\n\r\nAlso we can talk more tests soon too when you are free. \r\n\r\nGoodluck on the release tomorrow guys!", "Not sure why github thinks there are conflicts here, as I just rebased from the current master branch.\r\nMerging into master locally works on my side without conflicts\r\n```\r\ngit checkout master\r\ngit reset --hard origin/master\r\ngit merge --no-ff eltoto1219/support_multi_dim_tensors_for_images\r\nMerge made by the 'recursive' strategy.\r\n datasets/lxmert_pretraining_beta/lxmert_pretraining_beta.py | 89 +++++++++++++++++++++++++++++++++++++\r\n datasets/lxmert_pretraining_beta/test_multi_array.py | 45 +++++++++++++++++++\r\n datasets/lxmert_pretraining_beta/to_arrow_data.py | 371 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\r\n src/nlp/arrow_dataset.py | 24 +++++-----\r\n src/nlp/arrow_writer.py | 22 ++++++++--\r\n src/nlp/features.py | 229 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---\r\n tests/test_array_2d.py | 210 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\r\n 7 files changed, 969 insertions(+), 21 deletions(-)\r\n create mode 100644 datasets/lxmert_pretraining_beta/lxmert_pretraining_beta.py\r\n create mode 100644 datasets/lxmert_pretraining_beta/test_multi_array.py\r\n create mode 100644 datasets/lxmert_pretraining_beta/to_arrow_data.py\r\n create mode 100644 tests/test_array_2d.py\r\n```", "I put everything inside one commit from the master branch but the merge conflicts on github'side were still there for some reason.\r\nClosing and re-opening the PR fixed the conflict check on github's side.", "Almost done ! It still needs a pass on the docs/comments and maybe a few more tests.\r\n\r\nI had to do several changes for type inference in the ArrowWriter to make it support custom types.", "Ok this is now ready for review ! Thanks for your awesome work in this @eltoto1219 \r\n\r\nSummary of the changes:\r\n- added new feature type `Array2D`, that can be instantiated like `Array2D(\"float32\")` for example\r\n- added pyarrow extension type `Array2DExtensionType` and array `Array2DExtensionArray` that take care of converting from and to arrow. `Array2DExtensionType`'s storage is a list of list of any pyarrow array.\r\n- added pandas extension type `PandasArrayExtensionType` and array `PandasArrayExtensionArray` for conversion from and to arrow/python objects\r\n- refactor of the `ArrowWriter` write and write_batch functions to support extension types while preserving the type inference behavior.\r\n- added a utility object `TypedSequence` that is helpful to combine extension arrays and type inference inside the writer's methods.\r\n- added speed test for sequences writing (printed as warnings in pytest)\r\n- breaking: set disable_nullable to False by default as pyarrow's type inference returns nullable fields\r\n\r\nAnd there are plenty of new tests, mainly in `test_array2d.py` and `test_arrow_writer.py`.\r\n\r\nNote that there are some collisions in `arrow_dataset.py` with #513 so let's be careful when we'll merge this one.\r\n\r\nI know this is a big PR so feel free to ask questions", "I'll add Array3D, 4D.. tomorrow but it should take only a few lines. The rest won't change", "I took your comments into account and I added Array[3-5]D.\r\nI changed the storage type to fixed lengths lists. I had to update the `to_numpy` function because of that. Indeed slicing a FixedLengthListArray returns a view a of the original array, while in the previous case slicing a ListArray copies the storage.\r\n" ]

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[ "You're right, thanks for pointing it out. We will update it " ]

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[ "Hi, can you give a full self-contained example to reproduce this behavior?", "> Hi, can you give a full self-contained example to reproduce this behavior?\r\n\r\nThere is a notebook in the post ;)", "> If I run the ROUGE metric 2 times, with same predictions / references, the scores are slightly different.\r\n> \r\n> Refer to [this Colab notebook](https://colab.research.google.com/drive/1wRssNXgb9ldcp4ulwj-hMJn0ywhDOiDy?usp=sharing) for reproducing the problem.\r\n> \r\n> Example of F-score for ROUGE-1, ROUGE-2, ROUGE-L in 2 differents run :\r\n> \r\n> > ['0.3350', '0.1470', '0.2329']\r\n> > ['0.3358', '0.1451', '0.2332']\r\n> \r\n> Why ROUGE is not deterministic ?\r\n\r\nThis is because of rouge's `BootstrapAggregator` that uses sampling to get confidence intervals (low, mid, high).\r\nYou can get deterministic scores per sentence pair by using\r\n```python\r\nscore = rouge.compute(rouge_types=[\"rouge1\", \"rouge2\", \"rougeL\"], use_agregator=False)\r\n```\r\nOr you can set numpy's random seed if you still want to use the aggregator.", "Maybe we can set all the random seeds of numpy/torch etc. while running `metric.compute` ?", "We should probably indeed!", "Now if you re-run the notebook, the two printed results are the same @colanim\r\n```\r\n['0.3356', '0.1466', '0.2318']\r\n['0.3356', '0.1466', '0.2318']\r\n```\r\nHowever across sessions, the results may change (as numpy's random seed can be different). You can prevent that by setting your seed:\r\n```python\r\nrouge = nlp.load_metric('rouge', seed=42)\r\n```" ]

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[ "Actually `map(batched=True)` can already change the size of the dataset.\r\nIt can accept examples of length `N` and returns a batch of length `M` (can be null or greater than `N`).\r\n\r\nI'll make that explicit in the doc that I'm currently writing.", "You're two steps ahead of me :) In my testing, it also works if `M` < `N`.\r\n\r\nA batched map of different length seems to work if you directly overwrite all of the original keys, but fails if any of the original keys are preserved.\r\n\r\nFor example,\r\n```python\r\n# Create a dummy dataset\r\ndset = load_dataset(\"wikitext\", \"wikitext-2-raw-v1\")[\"test\"]\r\ndset = dset.map(lambda ex: {\"length\": len(ex[\"text\"]), \"foo\": 1})\r\n\r\n# Do an allreduce on each batch, overwriting both keys\r\ndset.map(lambda batch: {\"length\": [sum(batch[\"length\"])], \"foo\": [1]})\r\n# Dataset(schema: {'length': 'int64', 'foo': 'int64'}, num_rows: 5)\r\n\r\n# Now attempt an allreduce without touching the `foo` key\r\ndset.map(lambda batch: {\"length\": [sum(batch[\"length\"])]})\r\n# This fails with the error message below\r\n```\r\n\r\n```bash\r\n File \"/path/to/nlp/src/nlp/arrow_dataset.py\", line 728, in map\r\n arrow_schema = pa.Table.from_pydict(test_output).schema\r\n File \"pyarrow/io.pxi\", line 1532, in pyarrow.lib.Codec.detect\r\n File \"pyarrow/table.pxi\", line 1503, in pyarrow.lib.Table.from_arrays\r\n File \"pyarrow/public-api.pxi\", line 390, in pyarrow.lib.pyarrow_wrap_table\r\n File \"pyarrow/error.pxi\", line 85, in pyarrow.lib.check_status\r\npyarrow.lib.ArrowInvalid: Column 1 named foo expected length 1 but got length 2\r\n```\r\n\r\nAdding the `remove_columns=[\"length\", \"foo\"]` argument to `map()` solves the issue. Leaving the above error for future visitors. Perfect, thank you!" ]

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[ "Hi, it depends on what it is in your `dataset_builder.py` file. Can you share it?\r\n\r\nIf you are just loading `json` files, you can also directly use the `json` script (which will find the schema/features from your JSON structure):\r\n\r\n```python\r\nfrom nlp import load_dataset\r\nds = load_dataset(\"json\", data_files=rel_datafiles)\r\n```", "The behavior I'm seeing is from the `json` script. \r\nI hacked this together to overcome the error with the `JSON` dataloader\r\n\r\n```\r\nclass DatasetBuilder(hf_nlp.ArrowBasedBuilder):\r\n BUILDER_CONFIG_CLASS = BuilderConfig\r\n\r\n def _info(self):\r\n return DatasetInfo()\r\n\r\n def _split_generators(self, dl_manager):\r\n \"\"\" We handle string, list and dicts in datafiles\r\n \"\"\"\r\n if isinstance(self.config.data_files, (str, list, tuple)):\r\n files = self.config.data_files\r\n if isinstance(files, str):\r\n files = [files]\r\n return [SplitGenerator(name=Split.TRAIN, gen_kwargs={\"files\": files})]\r\n splits = []\r\n for split_name in [Split.TRAIN, Split.VALIDATION, Split.TEST]:\r\n if split_name in self.config.data_files:\r\n files = self.config.data_files[split_name]\r\n if isinstance(files, str):\r\n files = [files]\r\n splits.append(SplitGenerator(name=split_name, gen_kwargs={\"files\": files}))\r\n return splits\r\n\r\n def _prepare_split(self, split_generator):\r\n fname = \"{}-{}.arrow\".format(self.name, split_generator.name)\r\n fpath = os.path.join(self._cache_dir, fname)\r\n\r\n writer = ArrowWriter(path=fpath)\r\n\r\n generator = self._generate_tables(**split_generator.gen_kwargs)\r\n for key, table in utils.tqdm(generator, unit=\" tables\", leave=False):\r\n writer.write_table(table)\r\n num_examples, num_bytes = writer.finalize()\r\n\r\n split_generator.split_info.num_examples = num_examples\r\n split_generator.split_info.num_bytes = num_bytes\r\n # this is where the error is coming from\r\n # def parse_schema(schema, schema_dict):\r\n # for field in schema:\r\n # if pa.types.is_struct(field.type):\r\n # schema_dict[field.name] = {}\r\n # parse_schema(field.type, schema_dict[field.name])\r\n # elif pa.types.is_list(field.type) and pa.types.is_struct(field.type.value_type):\r\n # schema_dict[field.name] = {}\r\n # parse_schema(field.type.value_type, schema_dict[field.name])\r\n # else:\r\n # schema_dict[field.name] = Value(str(field.type))\r\n # \r\n # parse_schema(writer.schema, features)\r\n # self.info.features = Features(features)\r\n\r\n def _generate_tables(self, files):\r\n for i, file in enumerate(files):\r\n pa_table = paj.read_json(\r\n file\r\n )\r\n yield i, pa_table\r\n```\r\n\r\nSo I basically just don't populate the `self.info.features` though this doesn't seem to cause any problems in my downstream applications. \r\n\r\nThe other workaround I was doing was to just use pyarrow.json to build a table and then to create the Dataset with its constructor or from_table methods. `load_dataset` has nice split logic, so I'd prefer to use that.\r\n\r\n", "Also noticed that if you for example in a loader script\r\n\r\n```\r\nfrom nlp import ArrowBasedBuilder\r\n\r\nclass MyBuilder(ArrowBasedBuilder):\r\n...\r\n\r\n```\r\nand use that in the subclass, it will be on the module's __dict__ and will be selected before the `MyBuilder` subclass, and it will raise `NotImplementedError` on its `_generate_examples` method... In the code it check for abstract classes but Builder and ArrowBasedBuilder aren't abstract classes, they're regular classes with `@abstract_methods`.", "Indeed this is part of a more general limitation which is the fact that we should generate and update the `features` from the auto-inferred Arrow schema when they are not provided (also happen when a user change the schema using `map()`, the features should be auto-generated and guessed as much as possible to keep the `features` synced with the underlying Arrow table schema).\r\n\r\nWe will try to solve this soon." ]

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[ "Ok this is starting to be really big so it's probably good to merge this first version of the doc and continue in another PR :)\r\n\r\nThis first version of the doc can be explored here: https://2219-250213286-gh.circle-artifacts.com/0/docs/_build/html/index.html" ]

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[ "Looks you to me :)\r\n\r\nCould you also update the json file that goes with the dataset script by doing \r\n```\r\nnlp-cli test ./datasets/cnn_dailymail --save_infos --all_configs\r\n```\r\nIt will update the features metadata and the size of the dataset with your changes.", "@lhoestq I ran that command.\r\n\r\nThanks for the helpful repository!" ]

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[ "I just added the processed files of `snli` on our google storage, so that when you do `load_dataset` it can download the processed files from there :)\r\n\r\nWe are thinking about having available those processed files for more datasets in the future, because sometimes files aren't available (like for `snli`), or the download speed is too slow, or sometimes the files take time to be processed.", "Closing this one. Feel free to re-open if you have other questions :)", "Thank you!" ]

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[ "> Ok, so we're getting rid of the `FaissGpuOptions`?\r\n\r\nWe support `device=...` because it's simple, but faiss GPU options can be used in so many ways (you can set different gpu options for the different parts of your index for example) that it's probably better to let the user create and configure its index and then use `custom_index=...`" ]

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[ "Pinging @mariamabarham as well", "- `nlp` has MR! It's called `rotten_tomatoes`\r\n- SST is part of GLUE, or is that just SST-2?\r\n- `nlp` also has `ag_news`, a popular news classification dataset\r\n\r\nI'd also like to see:\r\n- the Yahoo Answers topic classification dataset\r\n- the Kaggle Fake News classification dataset", "Thanks @jxmorris12 for pointing this out. \r\n\r\nIn glue we only have SST-2 maybe we can add separately SST-1.\r\n", "This is the homepage for the Amazon dataset: https://www.kaggle.com/datafiniti/consumer-reviews-of-amazon-products\r\n\r\nIs there an easy way to download kaggle datasets programmatically? If so, I can add this one!", "Hi @jxmorris12 for now I think our `dl_manager` does not download from Kaggle.\r\n@thomwolf , @lhoestq", "Pretty sure the quora dataset is the same one I implemented here: https://github.com/huggingface/nlp/pull/366", "Great list. Any idea if Amazon Reviews has been added?\r\n\r\n- ~40 GB of text (sadly no emoji)\r\n- popular MLM pre-training dataset before bigger datasets like WebText https://arxiv.org/abs/1808.01371\r\n- turns out that binarizing the 1-5 star rating leads to great Pos/Neg/Neutral dataset, T5 paper claims to get very high accuracy (98%!) on this with small amount of finetuning https://arxiv.org/abs/2004.14546\r\n\r\nApologies if it's been included (great to see where) and if not, it's one of the better medium/large NLP dataset for semi-supervised learning, albeit a bit out of date. \r\n\r\nThanks!! \r\n\r\ncc @sshleifer ", "On the Amazon Reviews dataset, the original UCSD website has noted these are now updated to include product reviews through 2018 -- actually quite recent compared to many other datasets. Almost certainly the largest NLP dataset out there with labels!\r\nhttps://jmcauley.ucsd.edu/data/amazon/ \r\n\r\nAny chance someone has time to onboard this dataset in a HF way?\r\n\r\ncc @sshleifer " ]

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[ "I think this is good but can you detail a bit the behavior before and after your fix?", "examples:\r\n\r\ninput: `['B', 'I', 'I', 'O', 'B', 'I']`\r\nbefore: `[('B', 0, 0), ('I', 1, 2), ('B', 4, 4), ('I', 5, 5)]`\r\nafter: `[('_', 0, 2), ('_', 4, 5)]`\r\n\r\ninput: `['B-ARGM-LOC', 'I-ARGM-LOC', 'I-ARGM-LOC', 'O', 'B-ARGM-TIME', 'I-ARGM-TIME']`\r\nbefore: `[('LOC', 0, 2), ('TIME', 4, 5)]`\r\nafter: `[('ARGM-LOC', 0, 2), ('ARGM-TIME', 4, 5)]`\r\n\r\nThis is my test code:\r\n\r\n```python\r\nfrom metrics.seqeval.seqeval import end_of_chunk, start_of_chunk\r\n\r\n\r\ndef before_get_entities(seq, suffix=False):\r\n \"\"\"Gets entities from sequence.\r\n Args:\r\n seq (list): sequence of labels.\r\n Returns:\r\n list: list of (chunk_type, chunk_start, chunk_end).\r\n \"\"\"\r\n if any(isinstance(s, list) for s in seq):\r\n seq = [item for sublist in seq for item in sublist + ['O']]\r\n\r\n prev_tag = 'O'\r\n prev_type = ''\r\n begin_offset = 0\r\n chunks = []\r\n for i, chunk in enumerate(seq + ['O']):\r\n if suffix:\r\n tag = chunk[-1]\r\n type_ = chunk.split('-')[0]\r\n else:\r\n tag = chunk[0]\r\n type_ = chunk.split('-')[-1]\r\n\r\n if end_of_chunk(prev_tag, tag, prev_type, type_):\r\n chunks.append((prev_type, begin_offset, i - 1))\r\n if start_of_chunk(prev_tag, tag, prev_type, type_):\r\n begin_offset = i\r\n prev_tag = tag\r\n prev_type = type_\r\n\r\n return chunks\r\n\r\n\r\ndef after_get_entities(seq, suffix=False):\r\n \"\"\"Gets entities from sequence.\r\n Args:\r\n seq (list): sequence of labels.\r\n Returns:\r\n list: list of (chunk_type, chunk_start, chunk_end).\r\n \"\"\"\r\n if any(isinstance(s, list) for s in seq):\r\n seq = [item for sublist in seq for item in sublist + ['O']]\r\n\r\n prev_tag = 'O'\r\n prev_type = ''\r\n begin_offset = 0\r\n chunks = []\r\n for i, chunk in enumerate(seq + ['O']):\r\n if suffix:\r\n tag = chunk[-1]\r\n type_ = chunk[:-1].rsplit('-', maxsplit=1)[0] or '_'\r\n else:\r\n tag = chunk[0]\r\n type_ = chunk[1:].split('-', maxsplit=1)[-1] or '_'\r\n\r\n if end_of_chunk(prev_tag, tag, prev_type, type_):\r\n chunks.append((prev_type, begin_offset, i - 1))\r\n if start_of_chunk(prev_tag, tag, prev_type, type_):\r\n begin_offset = i\r\n prev_tag = tag\r\n prev_type = type_\r\n\r\n return chunks\r\n\r\n\r\ndef main():\r\n examples_1 = ['B', 'I', 'I', 'O', 'B', 'I']\r\n print(before_get_entities(examples_1))\r\n print(after_get_entities(examples_1))\r\n examples_2 = ['B-ARGM-LOC', 'I-ARGM-LOC', 'I-ARGM-LOC', 'O', 'B-ARGM-TIME', 'I-ARGM-TIME']\r\n print(before_get_entities(examples_2))\r\n print(after_get_entities(examples_2))\r\n\r\n\r\nif __name__ == '__main__':\r\n main()\r\n```", "And we can get more examples not correct, such as:\r\n\r\ninput: `['B', 'I', 'I-I']`\r\nbefore: `[('B', 0, 0), ('I', 1, 2)]`\r\nafter: `[('_', 0, 1), ('I', 2, 2)]`\r\n\r\ninput: `['B-ARGM-TIME', 'I-ARGM-TIME', 'I-TIME']`\r\nbefore: `[('TIME', 0, 2)]`\r\nafter: `[('ARGM-TIME', 0, 1), ('TIME', 2, 2)]`", "I think i didn't break any thing. Maybe the checks should be restart?", "Could you please rebase from master @AlongWY ? This should fix the CI stuff", "ok, i will do it", "Indeed the official repo is quite stale. Let's merge it here, thanks @AlongWY " ]

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[ "Thank you so much for working on this! This is awesome!\r\n\r\nHow much would it help you if we would remove the manual request?\r\n\r\nWe are naturally interested in getting some broad idea of how many people and who are using our dataset. But if you consider hosting the dataset yourself, I would rather remove this small barrier on our side (so that we then still get the download count from your library).", "This is an interesting aspect indeed!\r\nDo you want to send me an email (see my homepage) and I'll invite you on our slack channel to talk about that?\r\n@ghomasHudson wanna reach out to me as well? I tried to find your email to invite you without success." ]

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[ "@pjox I think the tests don't pass because you haven't provided any dummy data (`dummy_data.zip`).\r\n\r\n ", "> @pjox I think the tests don't pass because you haven't provided any dummy data (`dummy_data.zip`).\r\n\r\nBut can I do the dummy data without running `python nlp-cli test datasets/<your-dataset-folder> --save_infos --all_configs` first? 🤔 ", "You make a good point! Do you know how big is it uncompressed?", "Between 7T and 9T I think.", "Hi ! I've been busy but I plan to compute the missing metadata soon !\r\nLooking forward to be able to load a memory mapped version of OSCAR :) ", "> Hi ! I've been busy but I plan to compute the missing metadata soon !\r\n> Looking forward to be able to load a memory mapped version of OSCAR :)\r\n\r\nAmazing! Thanks! 😄 ", "Hi there, are there any plans to complete this issue soon? I'm planning to use this dataset on a project. Let me know if there's anything I can do to help to finish this 🤗 ", "Yes it will be added soon :) \r\nRecently the OSCAR data files were moved to another host. We just need to update the script and compute the dataset_infos.json (it will probably take a few days).", "@lhoestq I've seen in oscar.py that it isn't a dataset script with manual download way. Is that correct? \r\nSome time ago, @pjox had some troubles with his servers providing that dataset 'cause it's really huge. Providing it on an automatic download way seems to be a little bit dangerous for me 😄 ", "Now thanks to @pjox 's help OSCAR is hosted on HF's S3, which is probably more robust that the previous servers :)\r\n\r\nAlso small update on my side:\r\nI launched the computation of the dataset_infos.json file, it will take a few days.", "Now it seems to be a good plan for me 🤗 ", "But is there a plan to provide the OSCAR's unshuffled version too?", "The one we have on S3 is currently the unshuffled version", "I've thought that you won't provide the unshuffled version 'cause this comment on oscar.py:\r\n\r\n`# TODO(oscar): Implement unshuffled OSCAR`\r\n\r\n", "That TODO is normal, I haven't touched the python script in months (I haven't had the time, sorry), but I guess @lhoestq fixed the paths if he's already working on the metadata. In any case from now on, only the unshuffled versions of OSCAR will be distributed through the hf/datasets library as in any case it is the version most people use to train language models.\r\n\r\nIf for any reason, you need the shuffled version it will always be available on the [OSCAR website](https://oscar-corpus.com).\r\n\r\nAlso future versions of OSCAR will be unshuffled only.", "Should we close this PR now that the other one was merged?", "Sure.\r\nClosing since #1694 is merged", "@lhoestq just a little detail, is the Oscar version that HF offers the same one that was available on INRIA? By that I mean, have you done any further filtering or removing of data inside it? Thanks a lot! ", "Hello @jchwenger, this is exactly the same (unshuffled) version that's available at Inria. Sadly no further filtering is provided, but after the latest OSCAR audit (https://arxiv.org/abs/2103.12028) we're already working on future versions of OSCAR that will be \"filtered\" and that will be available on the OSCAR website and hopefully here as well.", "@pjox brilliant, in my case I was hoping it would be unfiltered, good news!" ]

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[ "This is probably a Windows issue, we need to specify the encoding when `load_dataset()` reads the original CSV file.\r\nTry to find the `open()` statement called by `load_dataset()` and add an `encoding='utf-8'` parameter.\r\nSee issues #242 and #307 ", "It should be in `xtreme.py:L755`:\r\n```python\r\n if self.config.name == \"tydiqa\" or self.config.name.startswith(\"MLQA\") or self.config.name == \"SQuAD\":\r\n with open(filepath) as f:\r\n data = json.load(f)\r\n```\r\n\r\nCould you try to add the encoding parameter:\r\n```python\r\nopen(filepath, encoding='utf-8')\r\n```", "Hello @jerryIsHere :) Did it work ?\r\nIf so we may change the dataset script to force the utf-8 encoding", "@lhoestq sorry for being that late, I found 4 copy of xtreme.py. I did the changes as what has been told to all of them.\r\nThe problem is not solved", "Could you provide a better error message so that we can make sure it comes from the opening of the `tydiqa`'s json files ?\r\n", "@lhoestq \r\nThe error message is same as before:\r\nException has occurred: UnicodeDecodeError\r\n'cp950' codec can't decode byte 0xe2 in position 111: illegal multibyte sequence\r\n File \"D:\\python\\test\\test.py\", line 3, in <module>\r\n dataset = load_dataset('xtreme', 'tydiqa')\r\n\r\n\r\n\r\nI said that I found 4 copy of xtreme.py and add the 「, encoding='utf-8'」 parameter to the open() function\r\nthese python script was found under this directory\r\nC:\\Users\\USER\\AppData\\Local\\Programs\\Python\\Python37\\Lib\\site-packages\\nlp\\datasets\\xtreme\r\n", "Hi there !\r\nI encountered the same issue with the IMDB dataset on windows. It threw an error about charmap not being able to decode a symbol during the first time I tried to download it. I checked on a remote linux machine I have, and it can't be reproduced.\r\nI added ```encoding='UTF-8'``` to both lines that have ```open``` in ```imdb.py``` (108 and 114) and it worked for me.\r\nThank you !", "> Hi there !\r\n> I encountered the same issue with the IMDB dataset on windows. It threw an error about charmap not being able to decode a symbol during the first time I tried to download it. I checked on a remote linux machine I have, and it can't be reproduced.\r\n> I added `encoding='UTF-8'` to both lines that have `open` in `imdb.py` (108 and 114) and it worked for me.\r\n> Thank you !\r\n\r\nHello !\r\nGlad you managed to fix this issue on your side.\r\nDo you mind opening a PR for IMDB ?", "> This is probably a Windows issue, we need to specify the encoding when `load_dataset()` reads the original CSV file.\r\n> Try to find the `open()` statement called by `load_dataset()` and add an `encoding='utf-8'` parameter.\r\n> See issues #242 and #307\r\n\r\nSorry for not responding for about a month.\r\nI have just found that it is necessary to change / add the environment variable as what was told in #242.\r\nEverything works after I add the new environment variable and restart my PC.\r\n\r\nI think the encoding issue for windows isn't limited to the open() function call specific to few dataset, but actually in the entire library, depends on the machine / os you use.", "Since #481 we shouldn't have other issues with encodings as they need to be set to \"utf-8\" be default.\r\n\r\nClosing this one, but feel free to re-open if you gave other questions" ]

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[ "I've tried it and am getting the same error as you.\r\n\r\nYou could use the text files rather than the pickle:\r\n```\r\nhttps://www.dropbox.com/s/ikkqxfdbdec3fuj/test.txt\r\nhttps://www.dropbox.com/s/1pzkadrvffbqw6o/train.txt\r\nhttps://www.dropbox.com/s/2mzialpsgf9k5l3/val.txt\r\n```\r\n\r\nThen you would get all 3 splits rather than just the train split.", "Thanks a lot @ghomasHudson - silly me for not spotting that! \r\n\r\nI'll keep the PR open for now since I'm quite close to wrapping it up.", "Hi @ghomasHudson your suggestion worked like a charm - the PR is now ready for review 😎 ", "Hello, I probably have a silly question but the labels of the emotion dataset are in the form of numbers and not string, so I can not use the function classification_report because it mixes numbers and string (prediction). How can I access the label in the form of a string and not a number?\r\nThank you in advance.", "Hi @juliette-sch! Yes, I believe that having the labels as integers is now the default for many classification datasets. You can access the string label via the `ClassLabel.int2str` function ([docs](https://huggingface.co/docs/datasets/package_reference/main_classes.html?highlight=int2str#datasets.ClassLabel.int2str)), so you could add a new column to the dataset as follows:\r\n\r\n```python\r\nfrom datasets import load_dataset \r\n\r\nemotions = load_dataset(\"emotion\")\r\n\r\ndef label_int2str(row):\r\n return {\"label_name\": emotions[\"train\"].features[\"label\"].int2str(row[\"label\"])}\r\n\r\n# adds a new column called `label_name`\r\nemotions = emotions.map(label_int2str)\r\n```", "Great, thank you very much @lewtun !", "Hi, @lewtun \r\nWhen I load \"emotion\"\r\n```\r\nfrom datasets import load_dataset\r\n\r\nemotions = load_dataset(\"emotion\")\r\n```\r\n\r\nThere is an error:\r\n\r\n```\r\nConnectionError: Couldn't reach https://www.dropbox.com/s/1pzkadrvffbqw6o/train.txt?dl=1 (SSLError(MaxRetryError(\"HTTPSConnectionPool(host='www.dropbox.com', port=443): Max retries exceeded with url: /s/1pzkadrvffbqw6o/train.txt?dl=1 (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1091)')))\")))\r\n```\r\nCan you please tell me what is wrong?\r\n\r\nThanks a lot.\r\nDan", "Hi ! I could't reproduce the error, can you try again ? You can also try updating the `datasets` library and see if it fixes the issue", "Hi @lhoestq \r\n\r\nIt seems my company's internet blocked dropbox, I am sorry.\r\nThanks a lot.\r\n" ]

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[ "Hi @saverymax ! For licensing reasons, the original team was unable to release pre-processed CommonCrawl documents. Instead, they provided a script to re-create them from a CommonCrawl dump, but it unfortunately requires access to a medium-large size cluster:\r\nhttps://github.com/facebookresearch/ELI5#downloading-support-documents-from-the-commoncrawl\r\n\r\nIn order to make the task accessible to people who may not have access to this kind of infrastructure, we suggest to use Wikipedia as a knowledge source rather than the full CommonCrawl. The following blog post shows how you can create Wikipedia support documents and get a performance that is on par with a system that uses CommonCrawl pages.\r\nhttps://yjernite.github.io/lfqa.html#task_description\r\n\r\nHope that helps, using ElasticSearch to index Wiki40b and create the documents should take about 4 hours. Let us know if you have any trouble with the blog post though!", "Hi, thanks for the quick response. The blog post is quite an interesting working example, thanks for sharing it.\r\nTwo follow-up points/questions about my original question:\r\n\r\n1. Yes, I read that the facebook team could not share the CommonCrawl b/c of licensing reasons. They state \"No, we are not allowed to host processed Reddit or CommonCrawl data,\" which indicates they could also not share the Reddit data for licensing reasons. But it seems that HuggingFace is able to share the Reddit data, so why not a subset of CommonCrawl?\r\n\r\n2. Thanks for the suggestion about ElasticSearch and Wiki40b. This is good to know about performance. I definitely could do the indexing and querying myself. What I like about the ELI5 dataset though, at least what is suggested by the paper, is that to create the dataset they had already selected the top 100 web sources and made a single support document from those. Though it doesn't appear to be too sophisticated an approach, having a single support document pre-computed (without having to run the facebook code or a replacement with another dataset) is super useful for my work, especially since I'm not working on developing the latest and greatest retrieval model. Of course, I don't expect HF NLP datasets to be perfectly tailored to my use-case. I know there is overhead to any project, I'm just illustrating a use-case of ELI5 which is not possible with the data provided as-is. If it's for licensing reasons, that is perfectly acceptable a reason, and I appreciate your response." ]

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[ "Could you rebase from master just to make sure we won't break anything for `fever` pls @mariamabarham ?" ]

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[ "`dataset.column_names` are being updated but `dataset.features` aren't indeed..." ]

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[ "Thanks @brainshawn for this update" ]

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[ "Really cool @jarednielsen !\r\nDo you think we can make it work with dataset with nested features like `squad` ?\r\n\r\nI just did a PR to fix `.set_format` for datasets with nested features, but as soon as it's merged we could try to make the conversion work on a dataset like `squad`.", "For datasets with nested features we have two aspects to take into account:\r\n1) There can be nested dict of features. What is done in tensorflow_datasets to make things work is to flatten the dictionaries to end up with one single dictionary. A dict like `{\"column1\": {\"subfeature\": ...}}` is converted to `{\"column1/subfeature\":...}`\r\n2) There can be ragged tensors, i.e. lists of objects with non-fixed shapes. For example in squad there are often multiple possible answers per question. What is done in tensorflow_datasets to make things work is to concatenate everything and add ragged attributes (cf serialization code [here](https://github.com/tensorflow/datasets/blob/master/tensorflow_datasets/core/example_serializer.py))", "Note that we have `flatten` method in `ArrowDataset`", "I added support for nested dictionaries. A few more design decisions popped up:\r\n\r\n_Should we serialize from NumPy arrays or from tf.Tensors?_\r\n- The [tfds example serializer](url) works from NumPy arrays.\r\n- Calling `dset.set_format(\"tensorflow\")` makes `__getitem__` return a tf.Tensor. So serializing from NumPy arrays would mean calling `dset.export()` before setting the format, which is confusing.\r\n- NumPy arrays can be serialized as their underlying datatype (int, float), while tf.Tensors must be converted to strings before serialization. This adds another step when serializing and deserializing, and removes the static-typing advantages of the TFRecord format.\r\n\r\nI think we should export directly from the underlying NumPy arrays into TFRecords, rather than using an intermediate step of tf.Tensor.\r\n\r\n_Should we serialize lists of dictionaries?_\r\n- The test_format_nested() test creates a list of dictionaries: https://github.com/huggingface/nlp/blob/911d5596f9b500e39af8642fe3d1b891758999c7/tests/test_arrow_dataset.py#L278-L288\r\n- This is difficult to serialize effectively, and I'm not aware of any dataset that has this format. SQuAD has a dictionary of lists, such as the `answers` key. Is this necessary?", "Thanks @thomwolf, used dset.flatten() to simplify. That handles the case of nested dictionaries, and then lists can be read into a tf.io.RaggedFeature in the case of something like squad answers.", "@jarednielsen I just checked and indeed we don't have lists of dicts, we can just focus on the squad format as a reference then :) I'll change the test to remove this format that's not supposed to happen", "Actually I realised that `flatten` also handles nested things like pyarrow's list<struct> so it's fine :D \r\nThis is so cool !\r\n\r\nCould you also add a test with a squad-like dataset ? As soon as we have that I think we'll be good to merge @jarednielsen :)\r\nGood job !", "Great, done! I think this could be a great canonical way to generate a dataset.", "I tried to match the format of Dataset.sort() and Dataset.shuffle() with the docstring. What difference are you referring to specifically?", "Oh my bad they're fine actually (I was thinking of the backticks that we don't use in the docstrings of the transformers repo for argument names)", "One final thing: now that we have a brand new documentation, could you just add `export` to the list of documented methods in [docs/source/package_reference/main_classes.rst](https://github.com/huggingface/nlp/blob/master/docs/source/package_reference/main_classes.rst) (so that it will appear in the docs [here](https://huggingface.co/nlp/package_reference/main_classes.html)) ?\r\n", "Done", "Cool thanks :)", "Since #403 (it just got merged), we return python objects and not numpy arrays anymore (unless format=\"numpy\" is specified).\r\nDo you think it can break the export method ? Could you try to rebase from master to run the CI to make sure it's fine ?", "Good catch. I fixed it up so it works with the new format. By the way, when dset.format == \"numpy\", it now returns single items (like `0`) as a 0-dimensional NumPy array. Not sure if that is desired.", "I played a little bit with the code and it works quite well :)\r\n\r\nI found two cases for which it doesn't work though:\r\n- if the features dict depth is > 2 (ex: wikisql), because `flatten` only flattens the first level of nesting (it can be fixed by calling `flatten` several times in a row, see [here](https://issues.apache.org/jira/browse/ARROW-4090))\r\n- Or if there are 2d features (ex: wikisql, `table.rows` is a sequence of sequences of strings), because tf.train.Features only support 1-d lists. That's why tensorflow-datasets flattens these 2-d features to 1-d and adds ragged features that are the shapes of the arrays, so that they can be reconstructed.\r\n\r\nI think we can ignore the 2d stuff right now (some work is being done in #363 ), but I'd like to see the `flatten` issue fixed soon\r\n", "That seems like a bug in `pyarrow`, or at least in `flatten()`. Looks like it should be a separate PR.", "I made `.flatten` work on our side (it calls pyarrow's flatten several times until it's really flat).\r\n\r\nThe only datasets that won't work are those with lists of lists of features, which is a rare case. Hopefully we can make this work with the multi-dimensional arrays changes we're also doing.\r\n\r\nI think we can merge now :) cc @thomwolf " ]

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[ "I fixed the issues that you pointed out, re-run all the test and pushed the fixed code :-)", "```\r\n=================================== FAILURES ===================================\r\n___________________ AWSDatasetTest.test_load_dataset_pandas ____________________\r\n\r\nself = <tests.test_dataset_common.AWSDatasetTest testMethod=test_load_dataset_pandas>\r\ndataset_name = 'pandas'\r\n\r\n def test_load_dataset(self, dataset_name):\r\n configs = self.dataset_tester.load_all_configs(dataset_name)[:1]\r\n> self.dataset_tester.check_load_dataset(dataset_name, configs)\r\n\r\ntests/test_dataset_common.py:231: \r\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \r\ntests/test_dataset_common.py:125: in check_load_dataset\r\n dl_manager=mock_dl_manager, download_mode=GenerateMode.FORCE_REDOWNLOAD, ignore_verifications=True\r\n../.local/lib/python3.6/site-packages/nlp/builder.py:432: in download_and_prepare\r\n dl_manager=dl_manager, verify_infos=verify_infos, **download_and_prepare_kwargs\r\n../.local/lib/python3.6/site-packages/nlp/builder.py:466: in _download_and_prepare\r\n split_generators = self._split_generators(dl_manager, **split_generators_kwargs)\r\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \r\n\r\nself = <nlp.datasets.pandas.91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926.pandas.Pandas object at 0x7f3b84f655c0>\r\ndl_manager = <nlp.utils.mock_download_manager.MockDownloadManager object at 0x7f3b84f3d320>\r\n\r\n def _split_generators(self, dl_manager):\r\n \"\"\" We handle string, list and dicts in datafiles\r\n \"\"\"\r\n if isinstance(self.config.data_files, (str, list, tuple)):\r\n files = self.config.data_files\r\n if isinstance(files, str):\r\n files = [files]\r\n return [nlp.SplitGenerator(name=nlp.Split.TRAIN, gen_kwargs={\"files\": files})]\r\n splits = []\r\n for split_name in [nlp.Split.TRAIN, nlp.Split.VALIDATION, nlp.Split.TEST]:\r\n> if split_name in self.config.data_files:\r\nE TypeError: argument of type 'NoneType' is not iterable\r\n\r\n../.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926/pandas.py:23: TypeError\r\n------------------------------ Captured log call -------------------------------\r\nINFO filelock:filelock.py:274 Lock 139893169180856 acquired on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO nlp.utils.file_utils:file_utils.py:386 https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py not found in cache or force_download set to True, downloading to /home/circleci/.cache/huggingface/datasets/tmpwmbk8e8d\r\nINFO nlp.utils.file_utils:file_utils.py:391 storing https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py in cache at /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py\r\nINFO nlp.utils.file_utils:file_utils.py:394 creating metadata file for /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py\r\nINFO filelock:filelock.py:318 Lock 139893169180856 released on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO nlp.load:load.py:157 Checking /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py for additional imports.\r\nINFO filelock:filelock.py:274 Lock 139893610536912 acquired on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO nlp.load:load.py:320 Found main folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas\r\nINFO nlp.load:load.py:333 Found specific version folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926\r\nINFO nlp.load:load.py:346 Found script file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py to /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926/pandas.py\r\nINFO nlp.load:load.py:354 Couldn't find dataset infos file at https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/dataset_infos.json\r\nINFO nlp.load:load.py:371 Found metadata file for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926/pandas.json\r\nINFO filelock:filelock.py:318 Lock 139893610536912 released on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO filelock:filelock.py:274 Lock 139893610533608 acquired on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO nlp.utils.file_utils:file_utils.py:386 https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py not found in cache or force_download set to True, downloading to /home/circleci/.cache/huggingface/datasets/tmp00hpyxrs\r\nINFO nlp.utils.file_utils:file_utils.py:391 storing https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py in cache at /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py\r\nINFO nlp.utils.file_utils:file_utils.py:394 creating metadata file for /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py\r\nINFO filelock:filelock.py:318 Lock 139893610533608 released on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO nlp.load:load.py:157 Checking /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py for additional imports.\r\nINFO filelock:filelock.py:274 Lock 139893610371224 acquired on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nINFO nlp.load:load.py:320 Found main folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas\r\nINFO nlp.load:load.py:333 Found specific version folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926\r\nINFO nlp.load:load.py:346 Found script file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py to /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926/pandas.py\r\nINFO nlp.load:load.py:354 Couldn't find dataset infos file at https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/dataset_infos.json\r\nINFO nlp.load:load.py:371 Found metadata file for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/pandas/pandas.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/pandas/91271af5018cf7184c27d5cd64802a1b234b3cf0e37dbca0d60f03179b13e926/pandas.json\r\nINFO filelock:filelock.py:318 Lock 139893610371224 released on /home/circleci/.cache/huggingface/datasets/e5827d40e7a41d66bc5a2eded8dbc90694265f47d9e7cb0273ff6ff11ba426d9.aa556094028e27447a02bb38655ff97b3f4e06db1ac04c1bcdcf5b283b0f75b6.py.lock\r\nWARNING nlp.builder:builder.py:215 Using custom data configuration default\r\nINFO nlp.builder:builder.py:349 Generating dataset pandas (/tmp/tmp296h8eeg/pandas/default/0.0.0)\r\nINFO nlp.builder:builder.py:397 Dataset not on Hf google storage. Downloading and preparing it from source\r\n____________________ AWSDatasetTest.test_load_dataset_text _____________________\r\n\r\nself = <tests.test_dataset_common.AWSDatasetTest testMethod=test_load_dataset_text>\r\ndataset_name = 'text'\r\n\r\n def test_load_dataset(self, dataset_name):\r\n configs = self.dataset_tester.load_all_configs(dataset_name)[:1]\r\n> self.dataset_tester.check_load_dataset(dataset_name, configs)\r\n\r\ntests/test_dataset_common.py:231: \r\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \r\ntests/test_dataset_common.py:125: in check_load_dataset\r\n dl_manager=mock_dl_manager, download_mode=GenerateMode.FORCE_REDOWNLOAD, ignore_verifications=True\r\n../.local/lib/python3.6/site-packages/nlp/builder.py:432: in download_and_prepare\r\n dl_manager=dl_manager, verify_infos=verify_infos, **download_and_prepare_kwargs\r\n../.local/lib/python3.6/site-packages/nlp/builder.py:466: in _download_and_prepare\r\n split_generators = self._split_generators(dl_manager, **split_generators_kwargs)\r\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \r\n\r\nself = <nlp.datasets.text.bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b.text.Text object at 0x7f3b6a111550>\r\ndl_manager = <nlp.utils.mock_download_manager.MockDownloadManager object at 0x7f3b85582908>\r\n\r\n def _split_generators(self, dl_manager):\r\n \"\"\" The `datafiles` kwarg in load_dataset() can be a str, List[str], Dict[str,str], or Dict[str,List[str]].\r\n \r\n If str or List[str], then the dataset returns only the 'train' split.\r\n If dict, then keys should be from the `nlp.Split` enum.\r\n \"\"\"\r\n if isinstance(self.config.data_files, (str, list, tuple)):\r\n # Handle case with only one split\r\n files = self.config.data_files\r\n if isinstance(files, str):\r\n files = [files]\r\n return [nlp.SplitGenerator(name=nlp.Split.TRAIN, gen_kwargs={\"files\": files})]\r\n else:\r\n # Handle case with several splits and a dict mapping\r\n splits = []\r\n for split_name in [nlp.Split.TRAIN, nlp.Split.VALIDATION, nlp.Split.TEST]:\r\n> if split_name in self.config.data_files:\r\nE TypeError: argument of type 'NoneType' is not iterable\r\n\r\n../.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b/text.py:24: TypeError\r\n------------------------------ Captured log call -------------------------------\r\nINFO filelock:filelock.py:274 Lock 139893159303656 acquired on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO nlp.utils.file_utils:file_utils.py:386 https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py not found in cache or force_download set to True, downloading to /home/circleci/.cache/huggingface/datasets/tmpk63omy4v\r\nINFO nlp.utils.file_utils:file_utils.py:391 storing https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py in cache at /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py\r\nINFO nlp.utils.file_utils:file_utils.py:394 creating metadata file for /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py\r\nINFO filelock:filelock.py:318 Lock 139893159303656 released on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO nlp.load:load.py:157 Checking /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py for additional imports.\r\nINFO filelock:filelock.py:274 Lock 139893159171352 acquired on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO nlp.load:load.py:320 Found main folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text\r\nINFO nlp.load:load.py:333 Found specific version folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b\r\nINFO nlp.load:load.py:346 Found script file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py to /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b/text.py\r\nINFO nlp.load:load.py:354 Couldn't find dataset infos file at https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/dataset_infos.json\r\nINFO nlp.load:load.py:371 Found metadata file for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b/text.json\r\nINFO filelock:filelock.py:318 Lock 139893159171352 released on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO filelock:filelock.py:274 Lock 139893618479176 acquired on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO nlp.utils.file_utils:file_utils.py:386 https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py not found in cache or force_download set to True, downloading to /home/circleci/.cache/huggingface/datasets/tmpkeykru_f\r\nINFO nlp.utils.file_utils:file_utils.py:391 storing https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py in cache at /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py\r\nINFO nlp.utils.file_utils:file_utils.py:394 creating metadata file for /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py\r\nINFO filelock:filelock.py:318 Lock 139893618479176 released on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO nlp.load:load.py:157 Checking /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py for additional imports.\r\nINFO filelock:filelock.py:274 Lock 139893618423848 acquired on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nINFO nlp.load:load.py:320 Found main folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text\r\nINFO nlp.load:load.py:333 Found specific version folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b\r\nINFO nlp.load:load.py:346 Found script file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py to /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b/text.py\r\nINFO nlp.load:load.py:354 Couldn't find dataset infos file at https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/dataset_infos.json\r\nINFO nlp.load:load.py:371 Found metadata file for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/text/text.py at /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/text/bf5568367c6707640e5601a44ed0af98f40a8483db81a7db99b85fab6606fc8b/text.json\r\nINFO filelock:filelock.py:318 Lock 139893618423848 released on /home/circleci/.cache/huggingface/datasets/3e34209a2741375a1db1ff03bf1abba1a9bd0e6016912d3ead0114b9d1ca2685.88f858fae8ed77fdff99fe23b726fce01f73388251e0a09a226e6f82cd4ffe6c.py.lock\r\nWARNING nlp.builder:builder.py:215 Using custom data configuration default\r\nINFO nlp.builder:builder.py:349 Generating dataset text (/tmp/tmpbu67mvue/text/default/0.0.0)\r\nINFO nlp.builder:builder.py:397 Dataset not on Hf google storage. Downloading and preparing it from source\r\n=============================== warnings summary ===============================\r\n/home/circleci/.local/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py:15\r\n /home/circleci/.local/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py:15: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses\r\n import imp\r\n\r\ntests/test_dataset_common.py::LocalDatasetTest::test_builder_class_tydiqa\r\n /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/tydiqa/42d88245bde7c0db6c0d48c822dcaa26c7299e0b40cace7e8d6a9e3628135125/tydiqa.py:85: DeprecationWarning: invalid escape sequence \\G\r\n \"\"\"\r\n\r\ntests/test_dataset_common.py::AWSDatasetTest::test_builder_class_mwsc\r\n /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/mwsc/53c0daac11b6794ff62b52a3a46c4f9da1bef68fd664a2f97b8918917aead715/mwsc.py:70: DeprecationWarning: invalid escape sequence \\[\r\n pattern = \"\\[.*\\]\"\r\n\r\ntests/test_dataset_common.py::AWSDatasetTest::test_builder_class_squadshifts\r\n /home/circleci/.local/lib/python3.6/site-packages/nlp/datasets/squadshifts/15536d7296a785325b99f6d84dfdceafa427419dd6caad110eabb5e5b4156cc2/squadshifts.py:47: DeprecationWarning: invalid escape sequence \\ \r\n \"\"\"\r\n\r\n-- Docs: https://docs.pytest.org/en/latest/warnings.html\r\n=========================== short test summary info ============================\r\nFAILED tests/test_dataset_common.py::AWSDatasetTest::test_load_dataset_pandas\r\nFAILED tests/test_dataset_common.py::AWSDatasetTest::test_load_dataset_text\r\n===== 2 failed, 934 passed, 516 skipped, 4 warnings in 1562.46s (0:26:02) ======\r\n\r\nExited with code exit status 1\r\nCircleCI received exit code 1\r\n```\r\nI get this failed test on CircleCI , but all the tests that I run locally where successful. The error also seems not to have any, obvious at least, connection with my code.\r\n\r\nAny suggestions? Thanks! :-) " ]

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[ "Great, done!" ]

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[ "Good catch :)\r\nI think there is another occurence that needs to be fixed in the second gist (line 4924 of the notebook file):\r\n```python\r\nbleu = nlp.load_metric(...)\r\n```", "Was fixed in e16f79b5f7fc12a6a30c777722be46897a272e6f\r\nClosing it." ]

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[ "The two configurations don't have the same sizes, I may change that so that they both have 21015300 examples for convenience, even though it's supposed to have 21015324 examples in total.\r\n\r\nOne configuration only has 21015300 examples because it seems that the embeddings of the last 24 examples are missing.", "It's ok to merge now imo. I'll make another PR if we find a way to have the missing embeddings" ]

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[ "I couldn't reproduce on my side.\r\nIt looks like you were not able to generate all the examples, and you have the problem for each split train-test-validation.\r\nCould you try to enable logging, try again and send the logs ?\r\n```python\r\nimport logging\r\nlogging.basicConfig(level=logging.INFO)\r\n```", "here's the log\r\n```\r\n>>> import nlp\r\nimport logging\r\nlogging.basicConfig(level=logging.INFO)\r\nnlp.load_dataset('cnn_dailymail', '3.0.0')\r\n>>> import logging\r\n>>> logging.basicConfig(level=logging.INFO)\r\n>>> nlp.load_dataset('cnn_dailymail', '3.0.0')\r\nINFO:nlp.load:Checking /u/jm8wx/.cache/huggingface/datasets/720d2e20d8dc6d98f21195a39cc934bb41dd0a40b57ea3d323661a7c5d70522c.d44c2417f4e0fe938ede0a684dcbb1fa9b4789de22e8a99c43103d4b4c374b3b.py for additional imports.\r\nINFO:filelock:Lock 140443095301136 acquired on /u/jm8wx/.cache/huggingface/datasets/720d2e20d8dc6d98f21195a39cc934bb41dd0a40b57ea3d323661a7c5d70522c.d44c2417f4e0fe938ede0a684dcbb1fa9b4789de22e8a99c43103d4b4c374b3b.py.lock\r\nINFO:nlp.load:Found main folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py at /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail\r\nINFO:nlp.load:Found specific version folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py at /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad\r\nINFO:nlp.load:Found script file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py to /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad/cnn_dailymail.py\r\nINFO:nlp.load:Updating dataset infos file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/dataset_infos.json to /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad/dataset_infos.json\r\nINFO:nlp.load:Found metadata file for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py at /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad/cnn_dailymail.json\r\nINFO:filelock:Lock 140443095301136 released on /u/jm8wx/.cache/huggingface/datasets/720d2e20d8dc6d98f21195a39cc934bb41dd0a40b57ea3d323661a7c5d70522c.d44c2417f4e0fe938ede0a684dcbb1fa9b4789de22e8a99c43103d4b4c374b3b.py.lock\r\nINFO:nlp.info:Loading Dataset Infos from /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad\r\nINFO:nlp.builder:Generating dataset cnn_dailymail (/u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0)\r\nINFO:nlp.builder:Dataset not on Hf google storage. Downloading and preparing it from source\r\nDownloading and preparing dataset cnn_dailymail/3.0.0 (download: 558.32 MiB, generated: 1.26 GiB, total: 1.81 GiB) to /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0...\r\nINFO:nlp.utils.info_utils:All the checksums matched successfully.\r\nINFO:nlp.builder:Generating split train\r\nINFO:nlp.arrow_writer:Done writing 285161 examples in 1240618482 bytes /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0.incomplete/cnn_dailymail-train.arrow.\r\nINFO:nlp.builder:Generating split validation\r\nINFO:nlp.arrow_writer:Done writing 13255 examples in 56637485 bytes /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0.incomplete/cnn_dailymail-validation.arrow.\r\nINFO:nlp.builder:Generating split test\r\nINFO:nlp.arrow_writer:Done writing 11379 examples in 48931393 bytes /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0.incomplete/cnn_dailymail-test.arrow.\r\nTraceback (most recent call last):\r\n File \"<stdin>\", line 1, in <module>\r\n File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/load.py\", line 520, in load_dataset\r\n builder_instance.download_and_prepare(\r\n File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/builder.py\", line 431, in download_and_prepare\r\n self._download_and_prepare(\r\n File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/builder.py\", line 488, in _download_and_prepare\r\n verify_splits(self.info.splits, split_dict)\r\n File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/utils/info_utils.py\", line 70, in verify_splits\r\n raise NonMatchingSplitsSizesError(str(bad_splits))\r\nnlp.utils.info_utils.NonMatchingSplitsSizesError: [{'expected': SplitInfo(name='test', num_bytes=49424491, num_examples=11490, dataset_name='cnn_dailymail'), 'recorded': SplitInfo(name='test', num_bytes=48931393, num_examples=11379, dataset_name='cnn_dailymail')}, {'expected': SplitInfo(name='train', num_bytes=1249178681, num_examples=287113, dataset_name='cnn_dailymail'), 'recorded': SplitInfo(name='train', num_bytes=1240618482, num_examples=285161, dataset_name='cnn_dailymail')}, {'expected': SplitInfo(name='validation', num_bytes=57149241, num_examples=13368, dataset_name='cnn_dailymail'), 'recorded': SplitInfo(name='validation', num_bytes=56637485, num_examples=13255, dataset_name='cnn_dailymail')}]\r\n```", "> here's the log\r\n> \r\n> ```\r\n> >>> import nlp\r\n> import logging\r\n> logging.basicConfig(level=logging.INFO)\r\n> nlp.load_dataset('cnn_dailymail', '3.0.0')\r\n> >>> import logging\r\n> >>> logging.basicConfig(level=logging.INFO)\r\n> >>> nlp.load_dataset('cnn_dailymail', '3.0.0')\r\n> INFO:nlp.load:Checking /u/jm8wx/.cache/huggingface/datasets/720d2e20d8dc6d98f21195a39cc934bb41dd0a40b57ea3d323661a7c5d70522c.d44c2417f4e0fe938ede0a684dcbb1fa9b4789de22e8a99c43103d4b4c374b3b.py for additional imports.\r\n> INFO:filelock:Lock 140443095301136 acquired on /u/jm8wx/.cache/huggingface/datasets/720d2e20d8dc6d98f21195a39cc934bb41dd0a40b57ea3d323661a7c5d70522c.d44c2417f4e0fe938ede0a684dcbb1fa9b4789de22e8a99c43103d4b4c374b3b.py.lock\r\n> INFO:nlp.load:Found main folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py at /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail\r\n> INFO:nlp.load:Found specific version folder for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py at /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad\r\n> INFO:nlp.load:Found script file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py to /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad/cnn_dailymail.py\r\n> INFO:nlp.load:Updating dataset infos file from https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/dataset_infos.json to /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad/dataset_infos.json\r\n> INFO:nlp.load:Found metadata file for dataset https://s3.amazonaws.com/datasets.huggingface.co/nlp/datasets/cnn_dailymail/cnn_dailymail.py at /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad/cnn_dailymail.json\r\n> INFO:filelock:Lock 140443095301136 released on /u/jm8wx/.cache/huggingface/datasets/720d2e20d8dc6d98f21195a39cc934bb41dd0a40b57ea3d323661a7c5d70522c.d44c2417f4e0fe938ede0a684dcbb1fa9b4789de22e8a99c43103d4b4c374b3b.py.lock\r\n> INFO:nlp.info:Loading Dataset Infos from /p/qdata/jm8wx/datasets/nlp/src/nlp/datasets/cnn_dailymail/9645e0bc96f647decf46541f6f4bef6936ee82ace653ac362bab03309a46d4ad\r\n> INFO:nlp.builder:Generating dataset cnn_dailymail (/u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0)\r\n> INFO:nlp.builder:Dataset not on Hf google storage. Downloading and preparing it from source\r\n> Downloading and preparing dataset cnn_dailymail/3.0.0 (download: 558.32 MiB, generated: 1.26 GiB, total: 1.81 GiB) to /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0...\r\n> INFO:nlp.utils.info_utils:All the checksums matched successfully.\r\n> INFO:nlp.builder:Generating split train\r\n> INFO:nlp.arrow_writer:Done writing 285161 examples in 1240618482 bytes /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0.incomplete/cnn_dailymail-train.arrow.\r\n> INFO:nlp.builder:Generating split validation\r\n> INFO:nlp.arrow_writer:Done writing 13255 examples in 56637485 bytes /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0.incomplete/cnn_dailymail-validation.arrow.\r\n> INFO:nlp.builder:Generating split test\r\n> INFO:nlp.arrow_writer:Done writing 11379 examples in 48931393 bytes /u/jm8wx/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0.incomplete/cnn_dailymail-test.arrow.\r\n> Traceback (most recent call last):\r\n> File \"<stdin>\", line 1, in <module>\r\n> File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/load.py\", line 520, in load_dataset\r\n> builder_instance.download_and_prepare(\r\n> File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/builder.py\", line 431, in download_and_prepare\r\n> self._download_and_prepare(\r\n> File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/builder.py\", line 488, in _download_and_prepare\r\n> verify_splits(self.info.splits, split_dict)\r\n> File \"/p/qdata/jm8wx/datasets/nlp/src/nlp/utils/info_utils.py\", line 70, in verify_splits\r\n> raise NonMatchingSplitsSizesError(str(bad_splits))\r\n> nlp.utils.info_utils.NonMatchingSplitsSizesError: [{'expected': SplitInfo(name='test', num_bytes=49424491, num_examples=11490, dataset_name='cnn_dailymail'), 'recorded': SplitInfo(name='test', num_bytes=48931393, num_examples=11379, dataset_name='cnn_dailymail')}, {'expected': SplitInfo(name='train', num_bytes=1249178681, num_examples=287113, dataset_name='cnn_dailymail'), 'recorded': SplitInfo(name='train', num_bytes=1240618482, num_examples=285161, dataset_name='cnn_dailymail')}, {'expected': SplitInfo(name='validation', num_bytes=57149241, num_examples=13368, dataset_name='cnn_dailymail'), 'recorded': SplitInfo(name='validation', num_bytes=56637485, num_examples=13255, dataset_name='cnn_dailymail')}]\r\n> ```\r\n\r\nWith `nlp == 0.3.0` version, I'm not able to reproduce this error on my side.\r\nWhich version are you using for reproducing your bug?\r\n\r\n```\r\n>> nlp.load_dataset('cnn_dailymail', '3.0.0')\r\n\r\n8.90k/8.90k [00:18<00:00, 486B/s]\r\n\r\nDownloading: 100%\r\n9.37k/9.37k [00:00<00:00, 234kB/s]\r\n\r\nDownloading and preparing dataset cnn_dailymail/3.0.0 (download: 558.32 MiB, generated: 1.26 GiB, total: 1.81 GiB) to /root/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0...\r\nDownloading:\r\n159M/? [00:09<00:00, 16.7MB/s]\r\n\r\nDownloading:\r\n376M/? [00:06<00:00, 62.6MB/s]\r\n\r\nDownloading:\r\n2.11M/? [00:06<00:00, 333kB/s]\r\n\r\nDownloading:\r\n46.4M/? [00:02<00:00, 18.4MB/s]\r\n\r\nDownloading:\r\n2.43M/? [00:00<00:00, 2.62MB/s]\r\n\r\nDataset cnn_dailymail downloaded and prepared to /root/.cache/huggingface/datasets/cnn_dailymail/3.0.0/3.0.0. Subsequent calls will reuse this data.\r\n{'test': Dataset(schema: {'article': 'string', 'highlights': 'string'}, num_rows: 11490),\r\n 'train': Dataset(schema: {'article': 'string', 'highlights': 'string'}, num_rows: 287113),\r\n 'validation': Dataset(schema: {'article': 'string', 'highlights': 'string'}, num_rows: 13368)}\r\n\r\n>> ...\r\n\r\n```", "In general if some examples are missing after processing (hence causing the `NonMatchingSplitsSizesError `), it is often due to either\r\n1) corrupted cached files\r\n2) decoding errors\r\n\r\nI just checked the dataset script for code that could lead to decoding errors but I couldn't find any. Before we try to dive more into the processing of the dataset, could you try to clear your cache ? Just to make sure that it isn't 1)", "Yes thanks for the support! I cleared out my cache folder and everything works fine now" ]

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[ "Hi, can you give details on your environment/os/packages versions/etc?", "Environment is Ubuntu 18.04, Python 3.7.5, nlp==0.3.0, filelock=3.0.12.\r\n\r\nThe external volume is Amazon FSx for Lustre, and it by default creates files with limited permissions. My working theory is that FileLock creates a lockfile that isn't writable, and thus there's no way to acquire it by removing the .lock file. But Python is able to create new files and write to them outside of the FileLock package.\r\n\r\nWhen I attempt to use FileLock within a Docker container by writing to `/root/.cache/hello.txt`, it succeeds. So there's some permissions issue. But it's not a Docker configuration issue; I've replicated it without Docker.\r\n```bash\r\necho \"hello world\" >> hello.txt\r\nls -l\r\n\r\n-rw-rw-r-- 1 ubuntu ubuntu 10 Jun 30 19:52 hello.txt\r\n```", "Looks like the `flock` syscall does not work on Lustre filesystems by default: https://github.com/benediktschmitt/py-filelock/issues/67.\r\n\r\nI added the `-o flock` option when mounting the filesystem, as [described here](https://docs.aws.amazon.com/fsx/latest/LustreGuide/getting-started-step2.html), which fixed the issue.", "Awesome, thanks a lot for sharing your fix!" ]

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[ "To be able to generate the Arrow dataset you need to either use our csv or json utilities `load_dataset(\"json\", data_files=my_json_files)` OR write your own custom dataset script (you can find some inspiration from the [squad](https://github.com/huggingface/nlp/blob/master/datasets/squad/squad.py) script for example). Custom dataset scripts can be called locally with `nlp.load_dataset(path_to_my_script_directory)`.\r\n\r\nThis should help you get what you call \"Dataset1\".\r\n\r\nThen using some dataset transforms like `.map` for example you can get to \"DatasetNER\" and \"DatasetREL\".\r\n", "Thanks for the helpful advice, @lhoestq -- I wasn't quite able to get the json recipe working - \r\n\r\n```\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/pyarrow/ipc.py in __init__(self, source)\r\n 60 \r\n 61 def __init__(self, source):\r\n---> 62 self._open(source)\r\n 63 \r\n 64 \r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/pyarrow/ipc.pxi in pyarrow.lib._RecordBatchStreamReader._open()\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/pyarrow/error.pxi in pyarrow.lib.pyarrow_internal_check_status()\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/pyarrow/error.pxi in pyarrow.lib.check_status()\r\nArrowInvalid: Tried reading schema message, was null or length 0\r\n```\r\n\r\nBut I'm going to give the generator_dataset_builder a try.\r\n\r\n1 more quick question -- can .map be used to output different length mappings -- could I skip one, or yield 2, can you map_batch ", "You can use `.map(my_func, batched=True)` and return less examples, or more examples if you want", "Thanks this answers my question. I think the issue I was having using the json loader were due to using gzipped jsonl files.\r\n\r\nThe error I get now is :\r\n\r\n```\r\n\r\nUsing custom data configuration test\r\n---------------------------------------------------------------------------\r\n\r\nValueError Traceback (most recent call last)\r\n\r\n<ipython-input-38-29082a31e5b2> in <module>\r\n 5 print(ner_datafiles)\r\n 6 \r\n----> 7 ds = nlp.load_dataset(\"json\", \"test\", data_files=ner_datafiles[0])\r\n 8 \r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/load.py in load_dataset(path, name, version, data_dir, data_files, split, cache_dir, download_config, download_mode, ignore_verifications, save_infos, **config_kwargs)\r\n 522 download_mode=download_mode,\r\n 523 ignore_verifications=ignore_verifications,\r\n--> 524 save_infos=save_infos,\r\n 525 )\r\n 526 \r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/builder.py in download_and_prepare(self, download_config, download_mode, ignore_verifications, save_infos, try_from_hf_gcs, dl_manager, **download_and_prepare_kwargs)\r\n 430 verify_infos = not save_infos and not ignore_verifications\r\n 431 self._download_and_prepare(\r\n--> 432 dl_manager=dl_manager, verify_infos=verify_infos, **download_and_prepare_kwargs\r\n 433 )\r\n 434 # Sync info\r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/builder.py in _download_and_prepare(self, dl_manager, verify_infos, **prepare_split_kwargs)\r\n 481 try:\r\n 482 # Prepare split will record examples associated to the split\r\n--> 483 self._prepare_split(split_generator, **prepare_split_kwargs)\r\n 484 except OSError:\r\n 485 raise OSError(\"Cannot find data file. \" + (self.manual_download_instructions or \"\"))\r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/builder.py in _prepare_split(self, split_generator)\r\n 736 schema_dict[field.name] = Value(str(field.type))\r\n 737 \r\n--> 738 parse_schema(writer.schema, features)\r\n 739 self.info.features = Features(features)\r\n 740 \r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/builder.py in parse_schema(schema, schema_dict)\r\n 734 parse_schema(field.type.value_type, schema_dict[field.name])\r\n 735 else:\r\n--> 736 schema_dict[field.name] = Value(str(field.type))\r\n 737 \r\n 738 parse_schema(writer.schema, features)\r\n\r\n<string> in __init__(self, dtype, id, _type)\r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/features.py in __post_init__(self)\r\n 55 \r\n 56 def __post_init__(self):\r\n---> 57 self.pa_type = string_to_arrow(self.dtype)\r\n 58 \r\n 59 def __call__(self):\r\n\r\n~/.virtualenvs/inv-text2struct/lib/python3.6/site-packages/nlp/features.py in string_to_arrow(type_str)\r\n 32 if str(type_str + \"_\") not in pa.__dict__:\r\n 33 raise ValueError(\r\n---> 34 f\"Neither {type_str} nor {type_str + '_'} seems to be a pyarrow data type. \"\r\n 35 f\"Please make sure to use a correct data type, see: \"\r\n 36 f\"https://arrow.apache.org/docs/python/api/datatypes.html#factory-functions\"\r\n\r\nValueError: Neither list<item: int64> nor list<item: int64>_ seems to be a pyarrow data type. Please make sure to use a correct data type, see: https://arrow.apache.org/docs/python/api/datatypes.html#factory-functions.\r\n```\r\n\r\nIf I just create a pa- table manually like is done in the jsonloader -- it seems to work fine. Ths JSON I'm trying to load isn't overly complex - 1 integer field, the rest text fields with a nested list of objects with text fields .", "I'll close this -- It's still unclear how to go about troubleshooting the json example as I mentioned above. If I decide it's worth the trouble, I'll create another issue, or wait for a better support for using nlp for making custom data-loaders." ]

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[ "I'm pretty sure you can get some inspiration from the squad_v2 script. It looks like the dataset is quite big so it will take some time for the users to generate it, but it should be reasonable.\r\n\r\nAlso you are saying that you are still making the dataset grow in size right ?\r\nIt's probably good practice to let the users do their training/evaluations with the exact same version of the dataset.\r\nWe allow for each dataset to specify a version (ex: 1.0.0) and increment this number every time there are new samples in the dataset for example. Does it look like a good solution for you ? Or would you rather have one final version with the full dataset ?", "It would also be good if there is any possibility for versioning, I think this way is much better than the dynamic way.\nIf you mean that part to put the tiles into one is the generation it would take up to 15-20 minutes on home computer hardware.\nAre there any compression or optimization algorithms while generating the dataset ?\nOtherwise the hardware limit is around 32 GB ram at the moment.\nIf everything works well we will add some more gigabytes of data in future what would make it pretty memory costly.", "15-20 minutes is fine !\r\nAlso there's no RAM limitations as we save to disk every 1000 elements while generating the dataset by default.\r\nAfter generation, the dataset is ready to use with (again) no RAM limitations as we do memory-mapping.", "Wow, that sounds pretty cool.\nActually I have the problem of running out of memory while tokenization on our local machine.\nThat wouldn't happen again, would it ?", "You can do the tokenization step using `my_tokenized_dataset = my_dataset.map(my_tokenize_function)` that writes the tokenized texts on disk as well. And then `my_tokenized_dataset` will be a memory-mapped dataset too, so you should be fine :)", "Does it have an affect to the trainings speed ?", "In your training loop, loading the tokenized texts is going to be fast and pretty much negligible compared to a forward pass. You shouldn't expect any slow down.", "Closing this one. Feel free to re-open if you have other questions" ]

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[ "Very cool to have this dataset, thank you for adding it :)" ]

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[ "The glue metric for cola is a metric for classification. It expects label ids as integers as inputs.", "I want to evaluate a sentence pair whether they are semantically equivalent, so I used MRPC and it gives the same error, does that mean we have to encode the sentences and parse as input?\r\n\r\nusing BertTokenizer;\r\n```\r\nencoded_reference=tokenizer.encode(reference, add_special_tokens=False)\r\nencoded_prediction=tokenizer.encode(prediction, add_special_tokens=False)\r\n```\r\n\r\n`glue_score = glue_metric.compute(encoded_prediction, encoded_reference)`\r\n```\r\n\r\nValueError Traceback (most recent call last)\r\n<ipython-input-9-4c3a3ce7b583> in <module>()\r\n----> 1 glue_score = glue_metric.compute(encoded_prediction, encoded_reference)\r\n\r\n6 frames\r\n/usr/local/lib/python3.6/dist-packages/nlp/metric.py in compute(self, predictions, references, timeout, **metrics_kwargs)\r\n 198 predictions = self.data[\"predictions\"]\r\n 199 references = self.data[\"references\"]\r\n--> 200 output = self._compute(predictions=predictions, references=references, **metrics_kwargs)\r\n 201 return output\r\n 202 \r\n\r\n/usr/local/lib/python3.6/dist-packages/nlp/metrics/glue/27b1bc63e520833054bd0d7a8d0bc7f6aab84cc9eed1b576e98c806f9466d302/glue.py in _compute(self, predictions, references)\r\n 101 return pearson_and_spearman(predictions, references)\r\n 102 elif self.config_name in [\"mrpc\", \"qqp\"]:\r\n--> 103 return acc_and_f1(predictions, references)\r\n 104 elif self.config_name in [\"sst2\", \"mnli\", \"mnli_mismatched\", \"mnli_matched\", \"qnli\", \"rte\", \"wnli\", \"hans\"]:\r\n 105 return {\"accuracy\": simple_accuracy(predictions, references)}\r\n\r\n/usr/local/lib/python3.6/dist-packages/nlp/metrics/glue/27b1bc63e520833054bd0d7a8d0bc7f6aab84cc9eed1b576e98c806f9466d302/glue.py in acc_and_f1(preds, labels)\r\n 60 def acc_and_f1(preds, labels):\r\n 61 acc = simple_accuracy(preds, labels)\r\n---> 62 f1 = f1_score(y_true=labels, y_pred=preds)\r\n 63 return {\r\n 64 \"accuracy\": acc,\r\n\r\n/usr/local/lib/python3.6/dist-packages/sklearn/metrics/_classification.py in f1_score(y_true, y_pred, labels, pos_label, average, sample_weight, zero_division)\r\n 1097 pos_label=pos_label, average=average,\r\n 1098 sample_weight=sample_weight,\r\n-> 1099 zero_division=zero_division)\r\n 1100 \r\n 1101 \r\n\r\n/usr/local/lib/python3.6/dist-packages/sklearn/metrics/_classification.py in fbeta_score(y_true, y_pred, beta, labels, pos_label, average, sample_weight, zero_division)\r\n 1224 warn_for=('f-score',),\r\n 1225 sample_weight=sample_weight,\r\n-> 1226 zero_division=zero_division)\r\n 1227 return f\r\n 1228 \r\n\r\n/usr/local/lib/python3.6/dist-packages/sklearn/metrics/_classification.py in precision_recall_fscore_support(y_true, y_pred, beta, labels, pos_label, average, warn_for, sample_weight, zero_division)\r\n 1482 raise ValueError(\"beta should be >=0 in the F-beta score\")\r\n 1483 labels = _check_set_wise_labels(y_true, y_pred, average, labels,\r\n-> 1484 pos_label)\r\n 1485 \r\n 1486 # Calculate tp_sum, pred_sum, true_sum ###\r\n\r\n/usr/local/lib/python3.6/dist-packages/sklearn/metrics/_classification.py in _check_set_wise_labels(y_true, y_pred, average, labels, pos_label)\r\n 1314 raise ValueError(\"Target is %s but average='binary'. Please \"\r\n 1315 \"choose another average setting, one of %r.\"\r\n-> 1316 % (y_type, average_options))\r\n 1317 elif pos_label not in (None, 1):\r\n 1318 warnings.warn(\"Note that pos_label (set to %r) is ignored when \"\r\n\r\nValueError: Target is multiclass but average='binary'. Please choose another average setting, one of [None, 'micro', 'macro', 'weighted'].\r\n\r\n```", "MRPC is also a binary classification task, so its metric is a binary classification metric.\r\n\r\nTo evaluate if pairs of sentences are semantically equivalent, maybe you could take a look at models that compute if one sentence entails the other or not (typically the kinds of model that could work well on the MRPC task).", "Closing this one. Feel free to re-open if you have other questions :)" ]

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[ "Sorry for the long diff, everything after the imports comes from `black` for code quality :/ ", " I think it's fine and I can't think of another way to make the import work anyways.\r\n\r\nMaybe we can have the `sys.path` behavior inside `prepare_module` instead ? Currently it seems to come out of nowhere in the code ^^'\r\nWe could check if external imports have a `__init__.py` and if it is the case then we can add to directory to the `PYTHONPATH`" ]

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[ "It looks like it comes from `mwparserfromhell`.\r\n\r\nWould it be possible to get the bad `section` that causes this issue ? The `section` string is from `datasets/wikipedia.py:L548` ? You could just add a `try` statement and print the section if the line `section_text.append(section.strip_code().strip())` crashes.\r\n\r\nIt will help us know if we have to fix it on our side or if it is a `mwparserfromhell` issue.", "Hi, \r\n\r\nThank you for you answer.\r\nI have try to print the bad section using `try` and `except`, but it is a bit weird as the error seems to appear 3 times for instance, but the two first error does not print anything (as if the function did not go in the `except` part).\r\nFor the third one, I got that (I haven't display the entire text) :\r\n\r\n> error : ==== Parque nacional Cajas ====\r\n> {{AP|Parque nacional Cajas}}\r\n> [[Archivo:Ecuador cajas national park.jpg|thumb|left|300px|Laguna del Cajas]]\r\n> El parque nacional Cajas está situado en los [[Cordillera de los Andes|Andes]], al sur del [[Ecuador]], en la provincia de [[Provincia de Azuay|Azuay]], a 33\r\n> [[km]] al noroccidente de la ciudad de [[Cuenca (Ecuador)|Cuenca]]. Los accesos más comunes al parque inician todos en Cuenca: Desde allí, la vía Cuenca-Mol\r\n> leturo atraviesa en Control de [[Surocucho]] en poco más de 30 minutos de viaje; más adelante, esta misma carretera pasa a orillas de la laguna La Toreadora donde están el Centro Administrativo y de Información del parque. Siguiendo de largo hacia [[Molleturo]], por esta vía se conoce el sector norte del Cajas y se serpentea entre varias lagunas mayores y menores.\r\n> Para acceder al parque desde la costa, la vía Molleturo-Cuenca es también la mejor opción.\r\n\r\nHow can I display the link instead of the text ? I suppose it will help you more ", "The error appears several times as Apache Beam retries to process examples up to 4 times irc.\r\n\r\nI just tried to run this text into `mwparserfromhell` but it worked without the issue.\r\n\r\nI used this code (from the `wikipedia.py` script):\r\n```python\r\nimport mwparserfromhell as parser\r\nimport re\r\nimport six\r\n\r\nraw_content = r\"\"\"==== Parque nacional Cajas ====\r\n{{AP|Parque nacional Cajas}}\r\n[[Archivo:Ecuador cajas national park.jpg|thumb|left|300px|Laguna del Cajas]]\r\nEl parque nacional Cajas está situado en los [[Cordillera de los Andes|Andes]], al sur del [[Ecuador]], en la provincia de [[Provincia de Azuay|Azuay]], a 33\r\n[[km]] al noroccidente de la ciudad de [[Cuenca (Ecuador)|Cuenca]]. Los accesos más comunes al parque inician todos en Cuenca: Desde allí, la vía Cuenca-Mol\r\nleturo atraviesa en Control de [[Surocucho]] en poco más de 30 minutos de viaje; más adelante, esta misma carretera pasa a orillas de la laguna La Toreadora donde están el Centro Administrativo y de Información del parque. Siguiendo de largo hacia [[Molleturo]], por esta vía se conoce el sector norte del Cajas y se serpentea entre varias lagunas mayores y menores.\r\n\"\"\"\r\n\r\nwikicode = parser.parse(raw_content)\r\n\r\n# Filters for references, tables, and file/image links.\r\nre_rm_wikilink = re.compile(\"^(?:File|Image|Media):\", flags=re.IGNORECASE | re.UNICODE)\r\n\r\ndef rm_wikilink(obj):\r\n return bool(re_rm_wikilink.match(six.text_type(obj.title)))\r\n\r\ndef rm_tag(obj):\r\n return six.text_type(obj.tag) in {\"ref\", \"table\"}\r\n\r\ndef rm_template(obj):\r\n return obj.name.lower() in {\"reflist\", \"notelist\", \"notelist-ua\", \"notelist-lr\", \"notelist-ur\", \"notelist-lg\"}\r\n\r\ndef try_remove_obj(obj, section):\r\n try:\r\n section.remove(obj)\r\n except ValueError:\r\n # For unknown reasons, objects are sometimes not found.\r\n pass\r\n\r\nsection_text = []\r\nfor section in wikicode.get_sections(flat=True, include_lead=True, include_headings=True):\r\n for obj in section.ifilter_wikilinks(matches=rm_wikilink, recursive=True):\r\n try_remove_obj(obj, section)\r\n for obj in section.ifilter_templates(matches=rm_template, recursive=True):\r\n try_remove_obj(obj, section)\r\n for obj in section.ifilter_tags(matches=rm_tag, recursive=True):\r\n try_remove_obj(obj, section)\r\n\r\n section_text.append(section.strip_code().strip())\r\n```", "Not sure why we're having this issue. Maybe could you get also the file that's causing that ?", "thanks for your answer.\r\nHow can I know which file is causing the issue ? \r\nI am trying to load the spanish wikipedia data. ", "Because of the way Apache Beam works we indeed don't have access to the file name at this point in the code.\r\nWe'll have to use some tricks I think :p \r\n\r\nYou can append `filepath` to `title` in `wikipedia.py:L512` for example. [[EDIT: it's L494 my bad]]\r\nThen just do `try:...except:` on the call of `_parse_and_clean_wikicode` L500 I guess.\r\n\r\nThanks for diving into this ! I tried it myself but I run out of memory on my laptop\r\nAs soon as we have the name of the file it should be easier to find what's wrong.", "Thanks for your help.\r\n\r\nI tried to print the \"title\" of the document inside the` except (mwparserfromhell.parser.ParserError) as e`,the title displayed was : \"Campeonato Mundial de futsal de la AMF 2015\". (Wikipedia ES) Is it what you were looking for ?", "Thanks a lot @Shiro-LK !\r\n\r\nI was able to reproduce the issue. It comes from [this table on wikipedia](https://es.wikipedia.org/wiki/Campeonato_Mundial_de_futsal_de_la_AMF_2015#Clasificados) that can't be parsed.\r\n\r\nThe file in which the problem occurs comes from the wikipedia dumps, and it can be downloaded [here](https://dumps.wikimedia.org/eswiki/20200501/eswiki-20200501-pages-articles-multistream6.xml-p6424816p7924815.bz2)\r\n\r\nParsing the file this way raises the parsing issue:\r\n\r\n```python\r\nimport mwparserfromhell as parser\r\nfrom tqdm.auto import tqdm\r\nimport bz2\r\nimport six\r\nimport logging\r\nimport codecs\r\nimport xml.etree.cElementTree as etree\r\n\r\nfilepath = \"path/to/eswiki-20200501-pages-articles-multistream6.xml-p6424816p7924815.bz2\"\r\n\r\ndef _extract_content(filepath):\r\n \"\"\"Extracts article content from a single WikiMedia XML file.\"\"\"\r\n logging.info(\"generating examples from = %s\", filepath)\r\n with open(filepath, \"rb\") as f:\r\n f = bz2.BZ2File(filename=f)\r\n if six.PY3:\r\n # Workaround due to:\r\n # https://github.com/tensorflow/tensorflow/issues/33563\r\n utf_f = codecs.getreader(\"utf-8\")(f)\r\n else:\r\n utf_f = f\r\n # To clear root, to free-up more memory than just `elem.clear()`.\r\n context = etree.iterparse(utf_f, events=(\"end\",))\r\n context = iter(context)\r\n unused_event, root = next(context)\r\n for unused_event, elem in tqdm(context, total=949087):\r\n if not elem.tag.endswith(\"page\"):\r\n continue\r\n namespace = elem.tag[:-4]\r\n title = elem.find(\"./{0}title\".format(namespace)).text\r\n ns = elem.find(\"./{0}ns\".format(namespace)).text\r\n id_ = elem.find(\"./{0}id\".format(namespace)).text\r\n # Filter pages that are not in the \"main\" namespace.\r\n if ns != \"0\":\r\n root.clear()\r\n continue\r\n raw_content = elem.find(\"./{0}revision/{0}text\".format(namespace)).text\r\n root.clear()\r\n\r\n if \"Campeonato Mundial de futsal de la AMF 2015\" in title:\r\n yield (id_, title, raw_content)\r\n\r\nfor id_, title, raw_content in _extract_content(filepath):\r\n wikicode = parser.parse(raw_content)\r\n```\r\n\r\nThe copied the raw content that can't be parsed [here](https://pastebin.com/raw/ZbmevLyH).\r\n\r\nThe minimal code to reproduce is:\r\n```python\r\nimport mwparserfromhell as parser\r\nimport requests\r\n\r\nraw_content = requests.get(\"https://pastebin.com/raw/ZbmevLyH\").content.decode(\"utf-8\")\r\nwikicode = parser.parse(raw_content)\r\n\r\n```\r\n\r\nI will create an issue on mwparserfromhell's repo to see if we can fix that\r\n", "This going to be fixed in the next `mwparserfromhell` release :)", "Fixed in `mwparserfromhell` version 0.6." ]

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[ "I wonder if this means downloading failed? That corpus has a really slow server.", "This dataset seems to have a decoding problem that results in inconsistencies in the number of generated examples.\r\nSee #215.\r\nThat's why we end up with a `NonMatchingSplitsSizesError `." ]

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[ "Oh yes, this is a backward compatibility feature with tensorflow_dataset in which a `Sequence` or `dict` is converted in a `dict` of `lists`, unfortunately it is not very intuitive, see here: https://github.com/huggingface/nlp/blob/master/src/nlp/features.py#L409\r\n\r\nTo avoid this behavior, you can just define the list in the feature with a simple list or a tuple (which is also simpler to write).\r\nIn your case, the features could be as follow:\r\n``` python\r\n...\r\nfeatures=nlp.Features({\r\n \"title\": nlp.Value(\"string\"),\r\n \"vertexSet\": [[{\r\n \"name\": nlp.Value(\"string\"),\r\n \"sent_id\": nlp.Value(\"int32\"),\r\n \"pos\": nlp.features.Sequence(nlp.Value(\"int32\")),\r\n \"type\": nlp.Value(\"string\"),\r\n }]],\r\n ...\r\n }),\r\n...\r\n```" ]

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[ "It's definitely going in the right direction ! Thanks for giving it a try\r\n\r\nI really like the API.\r\nIMO it's fine right now if we don't have all the dataset transforms (map, filter, etc.) as it can be done before building the multitask dataset, but it will be important to have them in the end.\r\nAll the formatting methods could easily be added though.\r\n\r\nI think there are some parts that will require some work with apache arrow like slicing. I can find a way to do it using pyarrow tables concatenation (I did something similar when implementing `__getitem__` with an input that is a list of indices [here](https://github.com/huggingface/nlp/pull/322/files#diff-73270df8d7f08c62a27e40806e1a5fb0R463-R469)). It is very fast and it allows to have the same output format as a normal Dataset.\r\n\r\nAlso maybe we should check that not only the columns but also the schemas match ?\r\nAnd maybe add the `seed` of the shuffling step as an argument ?\r\n\r\n", "Maybe we should remove the methods that are not implemented for now, WDYT @thomwolf ?", "That's an interesting first draft, thanks a lot for that and the user facing API is really nice.\r\n\r\nI think we should dive more into this and the questions of #217 before merging the first version though.\r\n\r\nIn particular, the typical way to do multi-tasking is usually to sample a task and then sample a batch within the selected task. I think we should probably stay be closer to this traditional approach, or at least make it very easy to do, rather than go to close to the T5 approach which is very specific to this paper.\r\n\r\nIn this regard, it seems important to find some way to address the remarks of @zphang. I'm still wondering if we should not adopt more of a sampling approach rather than an iteration approach.", "@thomwolf Thanks! I mainly wanted to get something working quickly for my own MTL research. I agree with a lot of the points you made so I'll convert this pull request back to a draft.\r\n\r\nFor your specific point about 'batch-level' multitask mixing, it would be a pretty trivial change to add a `batch_size` parameter and ensure every `batch_size` examples are from the same task. This would certainly work, but would add a notion of 'batches' to a Dataset, which does feel like a 'Sampler-level' concept and not a Dataset one. There's also the possibility of wanting some specific task-level sampling functionality (e.g. applying `SortishSampler` to each task) which would only work with this kind of 2 step sampling approach. My first proposal in the transformers repo was actually a Sampler https://github.com/huggingface/transformers/issues/4340. I wonder whether functionality at the sampler-level has a place in the vision for the `nlp` repo?\r\n\r\nI imagine following a sampling approach you'd have to abandon maintaining the same user-facing API as a standard dataset (A shame because replacing a single dataset seamlessly with a multitask one is a really nice user-experience).\r\n\r\nRandom half-Idea: You could have a class which accepts a list of any iterables (either a Dataset or a DataLoader which already is doing the batching). Not sure what interface you'd present though. hmmm. \r\n\r\nThere's definitely more discussion to have. \r\n", "Are there any updates on making multi-task learning more officially supported in the datasets/transformers libraries? \r\nGiven that many papers use more than one task, it would be great to have multi-task learning more officially supported and easier to use. There are a few notebooks/blogs about using HF Transformers for this, but they all mention that it's more of a hack and not really officially supported (e.g. [this notebook](https://colab.research.google.com/github/zphang/zphang.github.io/blob/master/files/notebooks/Multi_task_Training_with_Transformers_NLP.ipynb#scrollTo=xW8bnTgCsx5c), or [this blog](https://medium.com/@shahrukhx01/multi-task-learning-with-transformers-part-1-multi-prediction-heads-b7001cf014bf)). \r\n\r\n[jiant](https://github.com/nyu-mll/jiant) was a framework built on transformers that made multi-task learning a first class feature of the library until recently, but they stopped maintaining their library a month ago ([see here](https://github.com/nyu-mll/jiant)). \r\nThis could be a good reason to increase support from the HF team? @lhoestq @thomwolf \r\n\r\nI'm not advanced enough to contribute on this, but an up-to-date notebook showing how to train a model e.g. on both MLM and next-sentence-prediction would already be very useful!", "> Are there any updates on making multi-task learning more officially supported in the datasets/transformers libraries? Given that many papers use more than one task, it would be great to have multi-task learning more officially supported and easier to use. There are a few notebooks/blogs about using HF Transformers for this, but they all mention that it's more of a hack and not officially supported (e.g. [this notebook](https://colab.research.google.com/github/zphang/zphang.github.io/blob/master/files/notebooks/Multi_task_Training_with_Transformers_NLP.ipynb#scrollTo=xW8bnTgCsx5c), or [this blog](https://medium.com/@shahrukhx01/multi-task-learning-with-transformers-part-1-multi-prediction-heads-b7001cf014bf)).\r\n> \r\n> [jiant](https://github.com/nyu-mll/jiant) was a framework built on transformers that made multi-task learning a first class feature of the library until recently, but they stopped maintaining their library a month ago. This could be a good reason to increase support from the HF team? @lhoestq\r\n> \r\n> I'm not advanced enough to contribute on this, but an up-to-date notebook showing how to train a model e.g. on both MLM and NSP would already be very useful!\r\n\r\nI kinda stopped working on this as I didn't really get any response on an actual workable solution.\r\n\r\nThe problem that I came up against after initially being redirected here after [proposing this in the transformers repo](https://github.com/huggingface/transformers/issues/4340) ([among](https://github.com/huggingface/transformers/issues/6872) [others](https://github.com/huggingface/transformers/issues/1856)) , was the request be able to do the multitask mixing at the batch level as well as at the level of individual examples. As this repo doesn't really have the concept of 'batches' it would need to be implemented in the transformers repo, rather than here. You could then pick which level to do your multitask learning on.\r\n\r\nWork on T5 and as of last week, on [exT5](https://arxiv.org/pdf/2111.10952.pdf), have shown that multitask mixing on the example level works incredibly well (with a big enough batch size), so if you're ok doing that, then this pull request works.\r\n\r\nI completely agree that multitask learning is a vital part of modern NLP, nearly every piece of research code I write has at least some aspect of multitask learning (currently using this patch). Many of the top GLUE and SuperGLUE submissions are using some aspect of mutlitask learning. We need to support it.", "Fully agree. Batching and data loading is one important thing. The part I'm struggling with right now is the classification head (which is more part of the Transformers repo, but also essential for multi-task learning). @ghomasHudson, how do you tune two classification heads simultaneously? Say, when I want to fine-tune an existing base-model on some classification task (like NLI, or next-sentence-prediction) and at the same time add some MLM for regularisation & domain adaptation. In this case I need two classification heads, but I don't know how to switch them between the batches. ", "> Fully agree. Batching and data loading is one important thing. The part I'm struggling with right now is the classification head (which is more part of the Transformers repo, but also essential for multi-task learning). @ghomasHudson, how do you tune two classification heads simultaneously? Say, when I want to fine-tune an existing base-model on some classification task (like NLI, or next-sentence-prediction) and at the same time add some MLM for regularisation & domain adaptation. In this case I need two classification heads, but I don't know how to switch them between the batches.\r\n\r\nThis pull request is mainly focused on getting the data in the right format, but you're right that there's no easy way to pick between the heads without something like jiant. You could of course replicate this functionality yourself - probably by making a class that implements the functionality of both `ModelNameForSequenceClassification` or `ModelNameForMaskedLM` picking between them depending on some task parameter you add to the forward pass. \r\n\r\njiant make this approach model agnostic by [ignoring the custom per-model head implementations of huggingface](https://github.com/nyu-mll/jiant/blob/386d4e726a27becda1b03c241f064eb13c54860f/jiant/proj/main/modeling/heads.py#L17-L18), instead making generic versions. Then the jiant code [passes a `task` parameter](https://github.com/nyu-mll/jiant/blob/386d4e726a27becda1b03c241f064eb13c54860f/jiant/proj/main/modeling/primary.py#L107-L109) into their [JiantModel](https://github.com/nyu-mll/jiant/blob/386d4e726a27becda1b03c241f064eb13c54860f/jiant/proj/main/modeling/primary.py#L36-L79) wrapper. To implement this in huggingface transformers would require quite a few modifications to the current approach (potentially interfering with some other project aims e.g. code readability), so you might find it tricky to get a change like that accepted. It would be super cool though.\r\n\r\nAnd there's of course the exT5 way of doing things too where you sidestep this issue entirely by treating both tasks as text-to-text problems so you can end up with 100% shared parameters, e.g.\r\nMLM: `Lorem <mask_0> amet, consectetur <mask_1> do eiusmod tempor incididunt ut labore <mask_2>`\r\nNLI: `Premise: The Old One always comforted Ca'daan, except today. hypothesis: Ca'daan knew the Old One very well.`\r\nThis also allows you to do mixed batches of both tasks.\r\n\r\nPersonally, my research mainly focuses on this last approach, using the structure of the data itself to indicate the task rather than swapping in and out different parts of the network.", "Hi! `jiant` maintainer here, don't have much to add to the conversation yet but I'm happy to share my experience/thoughts on working with Multitask models if people have questions.", "Hi ! I think it could be easier to simply share as examples in `transformers` some code that uses `jiant` and/or subclass/reimplement some part of `transformers` for multitask ?", "> Hi ! I think it could be easier to simply share as examples in `transformers` some code that uses `jiant` and/or subclass/reimplement some part of `transformers` for multitask ?\r\n\r\nWell since `jiant` requires new huggingface models to be explicitly added (as there are [\"subtle differences in the models that jiant must abstract\"](https://github.com/nyu-mll/jiant/blob/master/guides/models/adding_models.md)), and isn't being maintained anymore, then the first option might be out of date quickly.\r\n\r\nIf `transformers` could move towards making the task-specific heads more generic and as well as [creating a new base model in the `__init__` method](https://github.com/huggingface/transformers/blob/43f953cc2eec804eba04e2a9ae164d1a33fd97a8/src/transformers/models/bert/modeling_bert.py#L1502), allowing it to be passed as an argument (along with other little tweaks to standardize the approach), then this functionality could be moved into `transformers` itself.\r\n\r\nIt does seem a little redundant to have `jiant` as a library abstracting all the idiosyncrasies of each model type, where this could be done directly in the `transformers` repo in a single place alongside the model.\r\n\r\nIt's not an easy problem to solve though, especially balanced with the desire to expose models with minimal abstraction. @zphang probably knows more about this than me though.", "As mentioned, one of the main obstacles is that HF/T doesn't support generic heads. At first glance, this should be easy, since the interface is quite simple: models output both a token-wise and a sequence representation (e.g. `[CLS]`), and heads use either one and output the corresponding predictions/losses.\r\n\r\nHowever, there are a number of cases where this doesn't work. One of them is multiple-choice tasks like HellaSwag, which is a multiple choice task with 4 text options. The way this is normally formatted is that you encode `context + question + option_X` for X=1..4, and then score all four options based on a scoring head and pick the highest scoring option as the prediction. This requires you to run the encoder on 4 separate inputs, which breaks the above abstraction (the task-specific model might need to call the encoder multiple times).\r\n\r\nAnother thing is batching. You can imagine with the above that you might want a different batch size for multiple-choice tasks compared to simpler classification tasks. This means you need task-specific batching as well. In addition, [it's been shown](https://arxiv.org/abs/2101.11038) that you really want to mix tasks within a single batch. This also leads into issues like how you want to sample different task examples, early stopping on them, how to mix the validation scores, etc. (`jiant` addressed these, through probably more-complicated-than-necessary configurations.)\r\n\r\nNone of these are insurmountable problems, but it requires some tweaking of the current code layout to get it to work. I would guess that it wouldn't take much work to get a 90% implementation.", "> Another thing is batching. You can imagine with the above that you might want a different batch size for multiple-choice tasks compared to simpler classification tasks. This means you need task-specific batching as well. In addition, [it's been shown](https://arxiv.org/abs/2101.11038) that you really want to mix tasks within a single batch. This also leads into issues like how you want to sample different task examples, early stopping on them, how to mix the validation scores, etc. (`jiant` addressed these, through probably more-complicated-than-necessary configurations.)\r\n\r\nThat's reassuring. exT5 find the same thing - that mixing tasks together in a batch gives better performance (provided the batch size is big enough that each batch contains a mix of different tasks). Assuming this, we can ignore doing things at the batch-level and just do this at the individual example level - in which case this pull request already does the data mixing part of the problem! Balancing different tasks could easily be added here by implementing temperature-scaled mixing, custom weights, etc...\r\n\r\nTo make a generic implementation of this using different heads would be hard (impossible?) without doing the sub-batching that Muppet do - in which case we're back at dealing with the 'batch' (sub-batch) level which would need an implementation in `transformers` not here.\r\n\r\n", "Mixing at example should work fine. One issue though is that, as mentioned above, different tasks maybe actually require different amounts of memory, so downstream the user would have to find some way to handle that. But this might be one of those \"the last/edge-case 10% is the hardest\" to handle kind of deals.", "Very true - there's always going to be those cases. I also feel that the way things are going, if we just leave this for a few years no one will be wanting to use task-specific heads anymore - it'll all be task prompts included in the input a-la GPT, T5, etc... which will make this substantially simpler to implement.\r\n\r\nIt's quite tricky to make a suitably non-opinionated generic version of this at the moment.", "> Is there an advantage to varying the proportions of each task in each batch\r\n\r\nSome tasks have much less data than others. E.g. SNLI vs. CoLA is almost a 100x difference, so people often sample differently-sized tasks differently.", "As a short-term solution, I like @lhoestq's suggestion to create a notebook that shows how to implement multi-task learning by subclassing some transformer & dataset classes in a general way. I've been trying to get @zphang's [great but old notebook](https://colab.research.google.com/github/zphang/zphang.github.io/blob/master/files/notebooks/Multi_task_Training_with_Transformers_NLP.ipynb#scrollTo=CQ39AbTAPAUi) on multi-task learning running today and I didn't get it to work, probably because it was implemented a long time ago with `transformers==2.11`, `torch==1.2`~ etc and installing older versions still caused errors.\r\nThere is also this [interesting new repo](https://github.com/shahrukhx01/multitask-learning-transformers), which has a cool way of enabling you to save and load a model with two classification heads ([see model here](https://huggingface.co/shahrukhx01/bert-multitask-query-classifiers) and blog post [here](https://medium.com/@shahrukhx01/multi-task-learning-with-transformers-part-1-multi-prediction-heads-b7001cf014bf)). Haven't tried it yet, but it only uses `BertForSequenceClassification` instead of the more general AutoModelForXYZ\r\n\r\n@zphang, would you maybe be up for contributing an updated version of your older notebook with the latest version of `transformers` and `datasets` which runs in today's colabs? I feel like this would be very helpful for the community and if you keep the classes/functions somewhat general, people can easily adapt it to their use cases! 🙏 :) \r\nWould be a great addition to the [HF notebooks](https://huggingface.co/docs/transformers/notebooks).\r\n\r\nIn the medium-term, I agree that it would be great to have more native support for this via the HF libraries. I feels weird that you can neither train the old BERT (trained on two tasks) nor any of the newer models, without some hacks. ", "@zphang would love to see the newer notebook as suggested by @MoritzLaurer " ]

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[ "For one dataset you can have different configurations that each have their own `nlp.Features`.\r\nWe imagine having one configuration per subtask for example.\r\nThey are loaded with `nlp.load_dataset(\"my_dataset\", \"my_config\")`.\r\n\r\nFor example the `glue` dataset has many configurations. It is a bit different from your case though because each configuration is a dataset by itself (sst2, mnli).\r\nAnother example is `wikipedia` that has one configuration per language." ]

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[ "Thanks @jxmorris12 for adding this adding. \r\nCan you please add a small description of the PR?" ]

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[ "Update: I think I've found a solution.\r\n\r\n```python\r\noutput_types = {\"input_ids\": tf.int64, \"token_type_ids\": tf.int64, \"attention_mask\": tf.int64}\r\ndef train_dataset_gen():\r\n for i in range(len(train_dataset)):\r\n yield train_dataset[i]\r\ntf_dataset = tf.data.Dataset.from_generator(train_dataset_gen, output_types=output_types)\r\n```\r\n\r\nloads WikiText-2 in 20 ms, and WikiText-103 in 20 ms. It appears to be lazily loading via indexing train_dataset.", "Yes this is the current best solution. We should probably show it in the tutorial notebook.\r\n\r\nNote that this solution unfortunately doesn't allow to train on TPUs (yet). See #193 ", "This approach still seems quite slow. When using TFRecords with a similar training loop, I get ~3.0-3.5 it/s on multi-node, multi-GPU training. I notice a pretty severe performance regression when scaling, with observed performance numbers. Since the allreduce step takes less than 100ms/it and I've achieved 80% scaling efficiency up to 64 GPUs, it must be the data pipeline.\r\n\r\n| Nodes | GPUs | Iterations/Second |\r\n| --- | --- | --- |\r\n| 1 | 2 | 2.01 |\r\n| 1 | 8 | 0.81 |\r\n| 2 | 16 | 0.37 |\r\n\r\nHere are performance metrics over 10k steps. The iteration speed appears to follow some sort of caching pattern. I would love to use `nlp` in my project, but a slowdown from 3.0 it/s to 0.3 it/s is too great to stomach.\r\n\r\n<img width=\"1361\" alt=\"Screen Shot 2020-07-02 at 8 29 22 AM\" src=\"https://user-images.githubusercontent.com/4564897/86378156-2f8d3900-bc3e-11ea-918b-c395c3df5377.png\">\r\n", "An interesting alternative to investigate here would be to use the tf.io library which has some support for Arrow to TF conversion: https://www.tensorflow.org/io/api_docs/python/tfio/arrow/ArrowDataset\r\n\r\nThere are quite a few types supported, including lists so if the unsupported columns are dropped then we could maybe have a zero-copy mapping from Arrow to TensorFlow, including tokenized inputs and 1D tensors like the ones we mostly use in NLP: https://github.com/tensorflow/io/blob/322b3170c43ecac5c6af9e39dbd18fd747913e5a/tensorflow_io/arrow/python/ops/arrow_dataset_ops.py#L44-L72\r\n\r\nHere is an introduction on Arrow to TF using tf.io: https://medium.com/tensorflow/tensorflow-with-apache-arrow-datasets-cdbcfe80a59f", "Interesting. There's no support for strings, but it does enable int and floats so that would work for tokenized inputs. \r\n\r\nArrowStreamDataset requires loading from a \"record batch iterator\", which can be instantiated from in-memory arrays as described here: https://arrow.apache.org/docs/python/ipc.html. \r\n\r\nBut the nlp.Dataset stores its data as a `pyarrow.lib.Table`, and the underlying features are `pyarrow.lib.ChunkedArray`. I can't find any documentation about lazily creating a record batch iterator from a ChunkedArray or a Table. Have you had any success?\r\n\r\nI can't find [any uses](https://grep.app/search?q=ArrowDataset&filter[lang][0]=Python) of tfio.arrow.ArrowDataset on GitHub.", "You can use `to_batches` maybe?\r\nhttps://arrow.apache.org/docs/python/generated/pyarrow.Table.html#pyarrow.Table.to_batches", "Also note that since #322 it is now possible to do\r\n```python\r\nids = [1, 10, 42, 100]\r\nbatch = dataset[ids]\r\n```\r\nFrom my experience it is quite fast but it can take lots of memory for large batches (haven't played that much with it).\r\nLet me know if you think there could be a better way to implement it. (current code is [here](https://github.com/huggingface/nlp/blob/78628649962671b4aaa31a6b24e7275533416845/src/nlp/arrow_dataset.py#L463))", "Thanks @lhoestq! That format is much better to work with.\r\n\r\nI put together a benchmarking script. This doesn't measure the CPU-to-GPU efficiency, nor how it scales with multi-GPU multi-node training where many processes are making the same demands on the same dataset. But it does show some interesting results:\r\n\r\n```python\r\nimport nlp\r\nimport numpy as np\r\nimport tensorflow as tf\r\nimport time\r\n\r\ndset = nlp.load_dataset(\"wikitext\", \"wikitext-2-raw-v1\", split=\"train\")\r\ndset = dset.filter(lambda ex: len(ex[\"text\"]) > 0)\r\nbsz = 1024\r\nn_batches = 100\r\n\r\ndef single_item_gen():\r\n for i in range(len(dset)):\r\n yield dset[i]\r\n\r\ndef sequential_batch_gen():\r\n for i in range(0, len(dset), bsz):\r\n yield dset[i:i+bsz]\r\n\r\ndef random_batch_gen():\r\n for i in range(len(dset)):\r\n indices = list(np.random.randint(len(dset), size=(bsz,)))\r\n yield dset[indices]\r\n\r\noutput_types = {\"text\": tf.string}\r\nsingle_item = tf.data.Dataset.from_generator(single_item_gen, output_types=output_types).batch(bsz)\r\ninterleaved = tf.data.Dataset.range(10).interleave(\r\n lambda idx: tf.data.Dataset.from_generator(single_item_gen, output_types=output_types),\r\n cycle_length=10,\r\n)\r\nsequential_batch = tf.data.Dataset.from_generator(sequential_batch_gen, output_types=output_types)\r\nrandom_batch = tf.data.Dataset.from_generator(random_batch_gen, output_types=output_types)\r\n\r\ndef iterate(tf_dset):\r\n start = time.perf_counter()\r\n for i, batch in enumerate(tf_dset.take(n_batches)):\r\n pass\r\n elapsed = time.perf_counter() - start\r\n print(f\"{tf_dset} took {elapsed:.3f} secs\")\r\n\r\niterate(single_item)\r\niterate(interleaved)\r\niterate(sequential_batch)\r\niterate(random_batch)\r\n```\r\n\r\nResults:\r\n```\r\n<BatchDataset shapes: {text: <unknown>}, types: {text: tf.string}> took 23.005 secs\r\n<InterleaveDataset shapes: {text: <unknown>}, types: {text: tf.string}> took 0.135 secs\r\n<FlatMapDataset shapes: {text: <unknown>}, types: {text: tf.string}> took 0.074 secs\r\n<FlatMapDataset shapes: {text: <unknown>}, types: {text: tf.string}> took 0.550 secs\r\n```\r\n\r\n- Batching a generator which fetches a single item is terrible.\r\n- Interleaving performs well on a single process, but doesn't scale well to multi-GPU training. I believe the bottleneck here is in Arrow dataset locking or something similar. The numbers from the table above are with interleaving.\r\n- The sequential access dominates the random access (7x faster). Is there any way to bring random access times closer to sequential access? Maybe re-indexing the dataset after shuffling each pass over the data.", "Hey @jarednielsen \r\n\r\nThanks for this very interesting analysis!! IMHO to read text data one should use `tf.data.TextLineDataset`. It would be interesting to compare what you have done with simply load with a `TextLineDataset` and see if there is a difference.\r\n\r\nA good example can be found here https://www.tensorflow.org/tutorials/load_data/text", "Thanks! I'm not actually loading in raw text data, that was just the synthetic data I created for this benchmark. A more realistic use case would be a dataset of tokenized examples, which would be a dict of lists of integers. TensorFlow's TextLineDataset greedily loads the dataset into the graph itself, which can lead to out-of-memory errors - one of the main reason I'm so drawn to the `nlp` library is its zero-copy no-RAM approach to dataset loading and mapping. \r\n\r\nIt's quite helpful for running a preprocessing pipeline - a sample ELECTRA pipeline I've built is here: https://github.com/jarednielsen/deep-learning-models/blob/nlp/models/nlp/common/preprocess.py.", "Sorry, I think I badly expressed myself, my bad. What I suggested is to compare with the usual loading textual data in pure TF with `TextLineDataset` with `nlp`. I know it is not recommended with very large datasets to use it, but I was curious to see how it behaves compared to a processing with `nlp` on smaller datasets.\r\n\r\nBTW your script looks very interesting, thanks for sharing!!" ]

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[ "Thank you BatJeti! The storm-joker, aka the typo, finally got caught!" ]

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[ "Looks good to me" ]

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[ "Hi Jared,\r\nInteresting, thanks for raising this question. You can also do that after loading with `dataset.select()` or `dataset.filter()` which let you keep only a specific subset of rows in a dataset.\r\nWhat is your use-case for sharding?", "Thanks for the pointer to those functions! It's still a little more verbose since you have to manually calculate which ids each rank would keep, but definitely works.\r\n\r\nMy use case is multi-node, multi-GPU training and avoiding global batches of duplicate elements. I'm using horovod. You can shuffle indices, or set random seeds, but explicitly sharding the dataset up front is the safest and clearest way I've found to do so." ]

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[ "That's great work @ghomasHudson !" ]

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[ "Does it make sense to download the full stories? I remember attempting to implement this dataset a while ago and ended up with something like:\r\n```python\r\n def _split_generators(self, dl_manager):\r\n \"\"\"Returns SplitGenerators.\"\"\"\r\n\r\n dl_dir = dl_manager.download_and_extract(_DOWNLOAD_URL)\r\n data_dir = os.path.join(dl_dir, \"narrativeqa-master\")\r\n\r\n urls = {\"test\":{}, \"train\": {},\"valid\":{}}\r\n with open(os.path.join(data_dir,\"documents.csv\")) as f_in:\r\n csv_reader = csv.reader(f_in)\r\n next(csv_reader) # discard header row\r\n for i,row in enumerate(csv_reader):\r\n if i > 1572:\r\n break\r\n if row != []:\r\n urls[row[1]][row[0]] = row[3]\r\n\r\n url_files = {}\r\n for key in urls.keys():\r\n url_files[key] = dl_manager.download_and_extract(urls[key])\r\n\r\n return [\r\n nlp.SplitGenerator(\r\n name=nlp.Split.TRAIN,\r\n gen_kwargs={\r\n \"data_dir\":data_dir,\r\n \"split\":\"train\",\r\n \"doc_id_to_path\":url_files[\"train\"]\r\n }\r\n ),\r\n ....\r\n```\r\nIt does end up cluttering your huggingface cache dir though.", "Also since there doesn't seem to be any meaning in the order of answer_1 and answer_2, it might make sense to combine them (see [squad.py](https://github.com/huggingface/nlp/blob/8b0ffc85e4e52ae1f18d31be99b6c70b82c991ca/datasets/squad/squad.py#L86-L88)):\r\n```python\r\n\"answers\": nlp.features.Sequence({\r\n \"text\": nlp.Value(\"string\"),\r\n \"tokenized\": nlp.features.Sequence(nlp.Value(\"string\"))\r\n})\r\n```\r\n(the tokenized features should also probably be lists of strings not just strings - see [natural_questions.py](https://github.com/huggingface/nlp/blob/4cd34287300a1135ce7b22f6dd209ca305c71b3a/datasets/natural_questions/natural_questions.py#L83))\r\n\r\nAgain, this is a personal preference thing, but it might be useful to combine the document-related features:\r\n```python\r\n{\r\n \"document\": {\r\n \"id\": nlp.Value(\"string\"),\r\n \"kind\": nlp.Value(\"string\"),\r\n \"url\": nlp.Value(\"string\"),\r\n \"file_size\": nlp.Value(\"int32\"),\r\n \"word_count\": nlp.Value(\"int32\"),\r\n \"start\": nlp.Value(\"string\"),\r\n \"end\": nlp.Value(\"string\"),\r\n \"wiki_url\": nlp.Value(\"string\"),\r\n \"wiki_title\": nlp.Value(\"string\"),\r\n \"summary\": nlp.features.Sequence({\r\n \"text\": nlp.Value(\"string\"),\r\n \"tokens\": nlp.features.Sequence(nlp.Value(\"string\"))\r\n }),\r\n \"text\": nlp.Value(\"string\"),\r\n },\r\n \"question\": nlp.features.Sequence({\r\n \"text\": nlp.Value(\"string\"),\r\n \"tokens\": nlp.features.Sequence(nlp.Value(\"string\"))\r\n }),\r\n \"answers\": nlp.features.Sequence({\r\n \"text\": nlp.Value(\"string\"),\r\n \"tokens\": nlp.features.Sequence(nlp.Value(\"string\"))\r\n })\r\n}\r\n```", "Did you manage to fix the dummy data @Varal7 ?", "@lhoestq do you think it's acceptable for the `dl_manager` to go grab all the individual stories from project gutenburg? I've got a working version of that but it does clutter up your huggingface cache somewhat.\r\n\r\nThe real value (and original purpose) of this dataset is doing question answering on the full text.", "> @lhoestq do you think it's acceptable for the `dl_manager` to go grab all the individual stories from project gutenburg? I've got a working version of that but it does clutter up your huggingface cache somewhat.\r\n> \r\n> The real value (and original purpose) of this dataset is doing question answering on the full text.\r\n\r\nWhat's the problem exactly with the cache ?", "Nothing, just that because each story is a separate download it gets a bit messy as all 1573 files are under `~/.cache/hugginface/datasets` rather than organized under a subdir.\r\n\r\nProbably doesn't matter to the end user though.", "Yea I agree it's a mess. I just created #393 to make things easier.", "I got the PR merged to have a cleaner the cache directory (everything is downloaded inside the 'downloads' sub-directory).\r\nFeel free to download all the stories then @ghomasHudson @Varal7 x)\r\nIf you have the possibility of downloading a compressed file with most of the stories at once it would be better though.", "Looks good @lhoestq . The problem I'm having at the moment is that stories from project Gutenberg occasionally fail. All books are out of copyright so we should be able to host them. \r\n\r\nHere's a zip file of the full text if we have anywhere to put them: https://drive.google.com/file/d/17jOR7NqvzDwSlPXrlHaYV-PGI8JG-KY5/view?usp=sharing\r\n", "I put the zip file here @ghomasHudson \r\nhttps://storage.googleapis.com/huggingface-nlp/datasets/narrative_qa/narrativeqa_full_text.zip\r\n\r\nSorry for the delay", "Closing in favor of #499" ]

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