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6ba540b747
* 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>
147 lines
4.3 KiB
ReStructuredText
147 lines
4.3 KiB
ReStructuredText
XLM
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Overview
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~~~~~~~~~~~~~~~~~~~~~
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The XLM model was proposed in `Cross-lingual Language Model Pretraining <https://arxiv.org/abs/1901.07291>`_
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by Guillaume Lample*, Alexis Conneau*. It's a transformer pre-trained using one of the following objectives:
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- a causal language modeling (CLM) objective (next token prediction),
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- a masked language modeling (MLM) objective (Bert-like), or
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- a Translation Language Modeling (TLM) object (extension of Bert's MLM to multiple language inputs)
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The abstract from the paper is the following:
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*Recent studies have demonstrated the efficiency of generative pretraining for English natural language understanding.
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In this work, we extend this approach to multiple languages and show the effectiveness of cross-lingual pretraining.
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We propose two methods to learn cross-lingual language models (XLMs): one unsupervised that only relies on monolingual
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data, and one supervised that leverages parallel data with a new cross-lingual language model objective. We obtain
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state-of-the-art results on cross-lingual classification, unsupervised and supervised machine translation. On XNLI,
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our approach pushes the state of the art by an absolute gain of 4.9% accuracy. On unsupervised machine translation,
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we obtain 34.3 BLEU on WMT'16 German-English, improving the previous state of the art by more than 9 BLEU. On
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supervised machine translation, we obtain a new state of the art of 38.5 BLEU on WMT'16 Romanian-English, outperforming
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the previous best approach by more than 4 BLEU. Our code and pretrained models will be made publicly available.*
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Tips:
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- XLM has many different checkpoints, which were trained using different objectives: CLM, MLM or TLM. Make sure to
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select the correct objective for your task (e.g. MLM checkpoints are not suitable for generation).
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- XLM has multilingual checkpoints which leverage a specific `lang` parameter. Check out the
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`multi-lingual <../multilingual.html>`__ page for more information.
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The original code can be found `here <https://github.com/facebookresearch/XLM/>`_.
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XLMConfig
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMConfig
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:members:
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XLMTokenizer
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMTokenizer
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:members: build_inputs_with_special_tokens, get_special_tokens_mask,
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create_token_type_ids_from_sequences, save_vocabulary
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XLM specific outputs
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~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.modeling_xlm.XLMForQuestionAnsweringOutput
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:members:
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XLMModel
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMModel
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:members:
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XLMWithLMHeadModel
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMWithLMHeadModel
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:members:
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XLMForSequenceClassification
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMForSequenceClassification
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:members:
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XLMForMultipleChoice
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMForMultipleChoice
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:members:
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XLMForTokenClassification
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMForTokenClassification
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:members:
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XLMForQuestionAnsweringSimple
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMForQuestionAnsweringSimple
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:members:
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XLMForQuestionAnswering
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.XLMForQuestionAnswering
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:members:
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TFXLMModel
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.TFXLMModel
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:members:
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TFXLMWithLMHeadModel
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.TFXLMWithLMHeadModel
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:members:
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TFXLMForSequenceClassification
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.TFXLMForSequenceClassification
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:members:
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TFXLMForMultipleChoice
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.TFXLMForMultipleChoice
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:members:
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TFXLMForTokenClassification
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.TFXLMForTokenClassification
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:members:
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TFXLMForQuestionAnsweringSimple
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autoclass:: transformers.TFXLMForQuestionAnsweringSimple
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:members:
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