{ "do_lower_case": true, "unk_token": "[UNK]", "sep_token": "[SEP]", "pad_token": "[PAD]", "cls_token": "[CLS]", "mask_token": "[MASK]", "model_max_length": 512, "tokenize_chinese_chars": true, "strip_accents": null, "do_basic_tokenize": true, "clean_up_tokenization_spaces": true, "tokenizer_class": "BertTokenizer" }