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--- |
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language: |
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- en |
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tags: |
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- retrieval |
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- entity-retrieval |
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- named-entity-disambiguation |
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- entity-disambiguation |
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- named-entity-linking |
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- entity-linking |
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- text2text-generation |
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--- |
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# GENRE |
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The GENRE (Generative ENtity REtrieval) system as presented in [Autoregressive Entity Retrieval](https://arxiv.org/abs/2010.00904) implemented in pytorch. |
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In a nutshell, GENRE uses a sequence-to-sequence approach to entity retrieval (e.g., linking), based on fine-tuned [BART](https://arxiv.org/abs/1910.13461) architecture. GENRE performs retrieval generating the unique entity name conditioned on the input text using constrained beam search to only generate valid identifiers. The model was first released in the [facebookresearch/GENRE](https://github.com/facebookresearch/GENRE) repository using `fairseq` (the `transformers` models are obtained with a conversion script similar to [this](https://github.com/huggingface/transformers/blob/master/src/transformers/models/bart/convert_bart_original_pytorch_checkpoint_to_pytorch.py). |
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This model was trained on the full training set of [BLINK](https://arxiv.org/abs/1911.03814) (i.e., 9M datapoints for entity-disambiguation grounded on Wikipedia) and then fine-tuned on [AIDA-YAGO2](https://www.mpi-inf.mpg.de/departments/databases-and-information-systems/research/ambiverse-nlu/aida/downloads). |
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## BibTeX entry and citation info |
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**Please consider citing our works if you use code from this repository.** |
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```bibtex |
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@inproceedings{decao2020autoregressive, |
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title={Autoregressive Entity Retrieval}, |
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author={Nicola {De Cao} and Gautier Izacard and Sebastian Riedel and Fabio Petroni}, |
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booktitle={International Conference on Learning Representations}, |
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url={https://openreview.net/forum?id=5k8F6UU39V}, |
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year={2021} |
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} |
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``` |
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## Usage |
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Here is an example of generation for Wikipedia page disambiguation: |
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```python |
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import pickle |
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from transformers import AutoTokenizer, AutoModelForSeq2SeqLM |
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# OPTIONAL: load the prefix tree (trie), you need to additionally download |
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# https://huggingface.co/facebook/genre-kilt/blob/main/trie.py and |
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# https://huggingface.co/facebook/genre-kilt/blob/main/kilt_titles_trie_dict.pkl |
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# from trie import Trie |
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# with open("kilt_titles_trie_dict.pkl", "rb") as f: |
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# trie = Trie.load_from_dict(pickle.load(f)) |
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tokenizer = AutoTokenizer.from_pretrained("facebook/genre-linking-aidayago2") |
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model = AutoModelForSeq2SeqLM.from_pretrained("facebook/genre-linking-aidayago2").eval() |
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sentences = ["Einstein was a [START_ENT] German [END_ENT] physicist."] |
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outputs = model.generate( |
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**tokenizer(sentences, return_tensors="pt"), |
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num_beams=5, |
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num_return_sequences=5, |
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# OPTIONAL: use constrained beam search |
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# prefix_allowed_tokens_fn=lambda batch_id, sent: trie.get(sent.tolist()), |
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) |
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tokenizer.batch_decode(outputs, skip_special_tokens=True) |
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``` |
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which outputs the following top-5 predictions (using constrained beam search) |
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``` |
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['Germany', |
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'German Empire', |
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'Nazi Germany', |
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'German language', |
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'France'] |
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``` |
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