Bangla-Electra

This is a second attempt at a Bangla/Bengali language model trained with Google Research's ELECTRA.

As of 2022 I recommend Google's MuRIL model trained on English, Bangla, and other major Indian languages, both in their script and latinized script: https://huggingface.co./google/muril-base-cased and https://huggingface.co./google/muril-large-cased

For causal language models, I would suggest https://huggingface.co./sberbank-ai/mGPT, though this is a large model

Tokenization and pre-training CoLab: https://colab.research.google.com/drive/1gpwHvXAnNQaqcu-YNx1kafEVxz07g2jL

V1 - 120,000 steps; V2 - 190,000 steps

Classification

Classification with SimpleTransformers: https://colab.research.google.com/drive/1vltPI81atzRvlALv4eCvEB0KdFoEaCOb

On Soham Chatterjee's news classification task: (Random: 16.7%, mBERT: 72.3%, Bangla-Electra: 82.3%)

Similar to mBERT on some tasks and configurations described in https://arxiv.org/abs/2004.07807

Question Answering

This model can be used for Question Answering - this notebook uses Bangla questions from Google's TyDi dataset: https://colab.research.google.com/drive/1i6fidh2tItf_-IDkljMuaIGmEU6HT2Ar

Corpus

Trained on a web crawl from https://oscar-corpus.com/ (deduped version, 5.8GB) and 1 July 2020 dump of bn.wikipedia.org (414MB)

Vocabulary

Included as vocab.txt in the upload - vocab_size is 29898