src/transformers/tokenization_roberta.py · 3f3fa7f7da601436355bc19ed57480fa5c18efed · chenpangpang / transformers

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Integrate fast tokenizers library inside transformers (#2674) · 3f3fa7f7
Funtowicz Morgan authored Feb 19, 2020


* Implemented fast version of tokenizers
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Bumped tokenizers version requirements to latest 0.2.1
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Added matching tests
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Matching OpenAI GPT tokenization !
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Matching GPT2 on tokenizers
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Expose add_prefix_space as constructor parameter for GPT2
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Matching Roberta tokenization !
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Removed fast implementation of CTRL.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Binding TransformerXL tokenizers to Rust.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Updating tests accordingly.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Added tokenizers as top-level modules.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Black & isort.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Rename LookupTable to WordLevel to match Rust side.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Black.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Use "fast" suffix instead of "ru" for rust tokenizers implementations.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Introduce tokenize() method on fast tokenizers.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* encode_plus dispatchs to batch_encode_plus
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* batch_encode_plus now dispatchs to encode if there is only one input element.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Bind all the encode_plus parameter to the forwarded batch_encode_plus call.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Bump tokenizers dependency to 0.3.0
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Formatting.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Fix tokenization_auto with support for new (python, fast) mapping schema.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Give correct fixtures path in test_tokenization_fast.py for the CLI.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Expose max_len_ properties on BertTokenizerFast
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Move max_len_ properties to PreTrainedTokenizerFast and override in specific subclasses.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* _convert_encoding should keep the batch axis tensor if only one sample in the batch.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Add warning message for RobertaTokenizerFast if used for MLM.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Added use_fast (bool) parameter on AutoTokenizer.from_pretrained().

This allows to easily enable/disable Rust-based tokenizer instantiation.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Let's tokenizers handle all the truncation and padding stuff.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Allow to provide tokenizer arguments during pipeline creation.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Update test_fill_mask pipeline to not use fast tokenizers.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Fix too much parameters for convert_encoding.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* When enabling padding, max_length should be set to None.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Avoid returning nested tensors of length 1 when calling encode_plus
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Ensure output is padded when return_tensor is not None.

Tensor creation requires the inital list input to be of the exact same size.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Disable transfoxl unittest if pytorch is not available (required to load the model)
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* encode_plus should not remove the leading batch axis if return_tensor is set
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Temporary disable fast tokenizers on QA pipelines.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Fix formatting issues.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Update tokenizers to 0.4.0

* Update style

* Enable truncation + stride unit test on fast tokenizers.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Add unittest ensuring special_tokens set match between Python and Rust.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Ensure special_tokens are correctly set during construction.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Give more warning feedback to the user in case of padding without pad_token.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* quality & format.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Added possibility to add a single token as str
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Added unittest for add_tokens and add_special_tokens on fast tokenizers.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Fix rebase mismatch on pipelines qa default model.

QA requires cased input while the tokenizers would be uncased.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Using offset mapping relative to the original string + unittest.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: save_vocabulary requires folder and file name
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Simplify import for Bert.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: truncate_and_pad disables padding according to the same heuristic than the one enabling padding.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Remove private member access in tokenize()
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Bump tokenizers dependency to 0.4.2
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* format & quality.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Use named arguments when applicable.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Add Github link to Roberta/GPT2 space issue on masked input.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Move max_len_single_sentence / max_len_sentences_pair to PreTrainedTokenizerFast + tests.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Relax type checking to include tuple and list object.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Addressing review comment: Document the truncate_and_pad manager behavior.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Raise an exception if return_offsets_mapping is not available with the current tokenizer.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Ensure padding is set on the tokenizers before setting any padding strategy + unittest.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* On pytorch we need to stack tensor to get proper new axis.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Generalize tests to different framework removing hard written return_tensors="..."
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Bump tokenizer dependency for num_special_tokens_to_add
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Overflowing tokens in batch_encode_plus are now stacked over the batch axis.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Improved error message for padding strategy without pad token.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Bumping tokenizers dependency to 0.5.0 for release.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Optimizing convert_encoding around 4x improvement. 🚀

Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* expose pad_to_max_length in encode_plus to avoid duplicating the parameters in kwargs
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Generate a proper overflow_to_sampling_mapping when return_overflowing_tokens is True.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Fix unittests for overflow_to_sampling_mapping not being returned as tensor.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Format & quality.
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Remove perfect alignment constraint for Roberta (allowing 1% difference max)
Signed-off-by: Morgan Funtowicz <morgan@huggingface.co>

* Triggering final CI
Co-authored-by: MOI Anthony <xn1t0x@gmail.com>
3f3fa7f7
tokenization_roberta.py 8.71 KB
Replace tokenization_roberta.py
