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* fix tokenizer saving and loading bugs when adding AddedToken to additional special tokens

* Add tokenizer test

* Style

* Style 2
Co-authored-by: Lysandre <lysandre.debut@reseau.eseo.fr>

* testing utils: capturing std streams context manager

* style

* missing import

* add the origin of this code

* Chunked feed forward for Bert

This is an initial implementation to test applying feed forward chunking for BERT.
Will need additional modifications based on output and benchmark results.

* Black and cleanup

* Feed forward chunking in BertLayer class.

* Isort

* add chunking for all models

* fix docs

* Fix typo
Co-authored-by: patrickvonplaten <patrick.v.platen@gmail.com>

* improve names and tests longformer

* more and better tests for longformer

* add first tf test

* finalize tf basic op functions

* fix merge

* tf shape test passes

* narrow down discrepancies

* make longformer local attn tf work

* correct tf longformer

* add first global attn function

* add more global longformer func

* advance tf longformer

* finish global attn

* upload big model

* finish all tests

* correct false any statement

* fix common tests

* make all tests pass except keras save load

* fix some tests

* fix torch test import

* finish tests

* fix test

* fix torch tf tests

* add docs

* finish docs

* Update src/transformers/modeling_longformer.py
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

* Update src/transformers/modeling_tf_longformer.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* apply Lysandres suggestions

* reverse to assert statement because function will fail otherwise

* applying sylvains recommendations

* Update src/transformers/modeling_longformer.py
Co-authored-by: Sam Shleifer <sshleifer@gmail.com>

* Update src/transformers/modeling_tf_longformer.py
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Sam Shleifer <sshleifer@gmail.com>

* correct encoder decoder model

* Apply suggestions from code review

* apply sylvains suggestions

* TFAlbertFor{TokenClassification, MultipleChoice}

* Patch models

* BERT and TF BERT info


s

* Update check_repo

fix typo: ckeckpoint->checkpoint

* Fix the tests for Electra

* Apply style

* Add a script to check all models are tested and documented

* Apply suggestions from code review
Co-authored-by: Kevin Canwen Xu <canwenxu@126.com>

* Address comments
Co-authored-by: Kevin Canwen Xu <canwenxu@126.com>

* Pin to 1.5.0

* Patch XLM GPU test

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Support for Comet.ml

* Need to import comet first

* Log this model, not the one in the backprop step

* Log args as hyperparameters; use framework to allow fine control

* Log hyperparameters with context

* Apply black formatting

* isort fix integrations

* isort fix __init__

* Update src/transformers/trainer.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Update src/transformers/trainer.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Update src/transformers/trainer_tf.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Address review comments

* Style + Quality, remove Tensorboard import test
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Lysandre <lysandre.debut@reseau.eseo.fr>

* Add strip_accents to basic tokenizer

* Add tests for strip_accents.

* fix style with black

* Fix strip_accents test

* empty commit to trigger CI

* Improved strip_accents check

* Add code quality with is not False

* TF outputs and test on BERT

* Albert to DistilBert

* All remaining TF models except T5

* Documentation

* One file forgotten

* TF outputs and test on BERT

* Albert to DistilBert

* All remaining TF models except T5

* Documentation

* One file forgotten

* Add new models and fix issues

* Quality improvements

* Add T5

* A bit of cleanup

* Fix for slow tests

* Style

* added `name` argument for wandb logging, also logging model config with trainer arguments

* Update src/transformers/training_args.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* added tf, post-review changes
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Add SequenceClassification and MultipleChoice TF models to Electra

* Apply style

* Add summary_proj_to_labels to Electra config

* Finally mirroring the PT version of these models

* Apply style

* Fix Electra test

* Update to match renamed attributes in fairseq master

RobertaModel no longer have model.encoder and args.num_classes attributes as of 5/28/20.

* Quality
Co-authored-by: Lysandre <lysandre.debut@reseau.eseo.fr>

* improve if else statement random seeds

* Apply suggestions from code review

* Update src/transformers/modeling_reformer.py

* Adding docs for how to load encoder_decoder pretrained model with individual config objects

* Adding docs for loading encoder_decoder config from pretrained folder

* Fixing  W293 blank line contains whitespace

* Update src/transformers/modeling_encoder_decoder.py

* Update src/transformers/modeling_encoder_decoder.py

* Update src/transformers/modeling_encoder_decoder.py

* Apply suggestions from code review

model file should only show examples for how to load save model

* Update src/transformers/configuration_encoder_decoder.py

* Update src/transformers/configuration_encoder_decoder.py

* fix space
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>

* Make the order of additional special tokens deterministic regardless of hash seeds

* Fix

* Remove out-dated BERT tips

* Update modeling_outputs.py

* Update bert.rst

* Update bert.rst

* Init work on pipelines doc

* Work in progress

* Work in progress

* Doc pipelines

* Rm unwanted default

* Apply suggestions from code review

Lysandre comments
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

* Adds train_batch_size, eval_batch_size, and n_gpu to to_sanitized_dict() output

* Update wandb config logging to use to_sanitized_dict

* removed n_gpu from sanitized dict

* fix quality check errors

* Fix TF Serving when output_hidden_states and output_attentions are True

* Add tests for saved model creation + bug fix for multiple choices models

* remove unused import

* Fix the input for several layers

* Fix test

* Fix conflict printing

* Apply style

* Fix XLM and Flaubert for TensorFlow

* Apply style

* Fix TF check version

* Apply style

* Trigger CI

* Fixed empty asserts

* black-reformatted stragglers in templates

* More code quality checks

* Update src/transformers/convert_marian_to_pytorch.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Update src/transformers/convert_marian_to_pytorch.py
Co-authored-by: Sam Shleifer <sshleifer@gmail.com>

* removed unused line as per @sshleifer
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Sam Shleifer <sshleifer@gmail.com>

* Add script to convert tf2.x checkpoint to pytorch

The script converts the newer TF2.x checkpoints (as published on their official GitHub: https://github.com/tensorflow/models/tree/master/official/nlp/bert) to Pytorch.

* rename file in order to stay consistent with naming convention

- remove duplicate doc-entry for tokenize_chinese_chars
- add doc for strip_accents and wordpieces_prefix

* Use return_dict=True in all tests

* Formatting

* Harmonize both Trainers API

* Fix test

* main_prcess -> process_zero