Status: Archive (code is provided as-is, no updates expected)

BERT-keras

Keras implementation of Google BERT(Bidirectional Encoder Representations from Transformers) and OpenAI's Transformer LM capable of loading pretrained models with a finetuning API.

Update: With TPU support both for inference and training like this colab notebook thanks to @HighCWu

How to use it?

# this is a pseudo code you can read an actual working example in tutorial.ipynb or the colab notebook
text_encoder = MyTextEncoder(**my_text_encoder_params) # you create a text encoder (sentence piece and openai's bpe are included)
lm_generator = lm_generator(text_encoder, **lm_generator_params) # this is essentially your data reader (single sentence and double sentence reader with masking and is_next label are included)
task_meta_datas = [lm_task, classification_task, pos_task] # these are your tasks (the lm_generator must generate the labels for these tasks too)
encoder_model = create_transformer(**encoder_params) # or you could simply load_openai() or you could write your own encoder(BiLSTM for example)
trained_model = train_model(encoder_model, task_meta_datas, lm_generator, **training_params) # it does both pretraing and finetuning
trained_model.save_weights('my_awesome_model') # save it
model = load_model('my_awesome_model', encoder_model) # load it later and use it!

Notes

Important code concepts

Ownership

Neiron