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πŸ“ˆ Financial Korean ELECTRA model

Pretrained ELECTRA Language Model for Korean (finance-koelectra-small-discriminator)

ELECTRA is a new method for self-supervised language representation learning. It can be used to pre-train transformer networks using relatively little compute. ELECTRA models are trained to distinguish "real" input tokens vs "fake" input tokens generated by another neural network, similar to the discriminator of a GAN.

More details about ELECTRA can be found in the ICLR paper or in the official ELECTRA repository on GitHub.


The current version of the model is trained on a financial news data of Naver news.

The final training corpus has a size of 25GB and 2.3B tokens.

This model was trained a cased model on a TITAN RTX for 500k steps.


from transformers import ElectraForPreTraining, ElectraTokenizer
import torch
discriminator = ElectraForPreTraining.from_pretrained("krevas/finance-koelectra-small-discriminator")
tokenizer = ElectraTokenizer.from_pretrained("krevas/finance-koelectra-small-discriminator")
sentence = "내일 ν•΄λ‹Ή μ’…λͺ©μ΄ λŒ€ν­ μƒμŠΉν•  것이닀"
fake_sentence = "내일 ν•΄λ‹Ή μ’…λͺ©μ΄ λ§›μžˆκ²Œ μƒμŠΉν•  것이닀"
fake_tokens = tokenizer.tokenize(fake_sentence)
fake_inputs = tokenizer.encode(fake_sentence, return_tensors="pt")
discriminator_outputs = discriminator(fake_inputs)
predictions = torch.round((torch.sign(discriminator_outputs[0]) + 1) / 2)
[print("%7s" % token, end="") for token in fake_tokens]
[print("%7s" % int(prediction), end="") for prediction in predictions.tolist()[1:-1]]
print("fake token : %s" % fake_tokens[predictions.tolist()[1:-1].index(1)])

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