The token used for empty cell values in a table. Empty cell values include "", "n/a", "nan" and "?". tokenize_chinese_chars (`bool`, *optional*, defaults to `True`): Whether or not to tokenize Chinese characters. This should likely be deactivated for Japanese (see this [issue](https://github.com/huggingface/transformers/issues/328)). strip_accents (`bool`, *optional*): Whether or not to strip all accents. If this option is not specified, then it will be determined by the value for `lowercase` (as in the original BERT). cell_trim_length (`int`, *optional*, defaults to -1): If > 0: Trim cells so that the length is <= this value. Also disables further cell trimming, should thus be used with `truncation` set to `True`. max_column_id (`int`, *optional*): Max column id to extract. max_row_id (`int`, *optional*): Max row id to extract. strip_column_names (`bool`, *optional*, defaults to `False`): Whether to add empty strings instead of column names. update_answer_coordinates (`bool`, *optional*, defaults to `False`): Whether to recompute the answer coordinates from the answer text. min_question_length (`int`, *optional*): Minimum length of each question in terms of tokens (will be skipped otherwise). max_question_length (`int`, *optional*): Maximum length of each question in terms of tokens (will be skipped otherwise). TNú