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# bert-base-sudachitra-v11

This model is a variant of SudachiTra.
The differences between the original `chiTra v1.1` and `bert-base-sudachitra-v11` are:
- `word_form_type` was changed from `normalized_nouns` to `surface`

Also read the original `README.md` descriptions below.

*(See [GitHub - WorksApplications/SudachiTra](https://github.com/WorksApplications/SudachiTra) for the latest README)*

# Sudachi Transformers (chiTra)

chiTra provides the pre-trained language models and a Japanese tokenizer for [Transformers](https://github.com/huggingface/transformers).

## chiTra pretrained language model

We used [NINJAL Web Japanese Corpus (NWJC)](https://pj.ninjal.ac.jp/corpus_center/nwjc/) from National Institute for Japanese Language and Linguistics which contains around 100 million web page text.

NWJC was used after cleaning to remove unnecessary sentences.

This model trained BERT using a pre-learning script implemented by [NVIDIA](https://github.com/NVIDIA/DeepLearningExamples/tree/master/TensorFlow2/LanguageModeling/BERT).

## License

Copyright (c) 2022 National Institute for Japanese Language and Linguistics and Works Applications Co., Ltd. All rights reserved.

"chiTra" is distributed by [National Institute for Japanese Langauge and Linguistics](https://www.ninjal.ac.jp/) and [Works Applications Co.,Ltd.](https://www.worksap.co.jp/) under [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0).