EQUES / jpharma-bert-base

Model Card

Our JpharmaBERT (base) is a continually pre-trained version of the BERT model ( tohoku-nlp/bert-base-japanese-v3 ), further trained on pharmaceutical data — the same dataset used for eques/jpharmatron .

Examoke Usage

import torch
from transformers import AutoModelForMaskedLM, AutoTokenizer, pipeline

model = AutoModelForMaskedLM.from_pretrained("EQUES/jpharma-bert-base", torch_dtype=torch.bfloat16)
tokenizer = AutoTokenizer.from_pretrained("EQUES/jpharma-bert-base")
fill_mask = pipeline("fill-mask", model=model, tokenizer=tokenizer)

results = fill_mask("水は化学式で[MASK]2Oです。")

for result in results:
    print(result)
# {'score': 0.49609375, 'token': 55, 'token_str': 'H', 'sequence': '水は化学式でH2Oです。'}
# {'score': 0.11767578125, 'token': 29257, 'token_str': 'Na', 'sequence': '水は化学式でNa2Oです。'}
# {'score': 0.047607421875, 'token': 61, 'token_str': 'N', 'sequence': '水は化学式でN2Oです。'}
# {'score': 0.038330078125, 'token': 16966, 'token_str': 'CH', 'sequence': '水は化学式でCH2Oです 。'}
# {'score': 0.0255126953125, 'token': 66, 'token_str': 'S', 'sequence': '水は化学式でS2Oです 。'}

Training Details

Training Data

We used the same dataset as eques/jpharmatron for training our JpharmaBERT, which consists of:

• Japanese text data (2B tokens) collected from pharmaceutical documents such as academic papers and package inserts
• English data (8B tokens) obtained from PubMed abstracts
• Pharmaceutical-related data (1.2B tokens) extracted from the multilingual CC100 dataset

After removing duplicate entries across these sources, the final dataset contains approximately 9 billion tokens.
(For details, please refer to our paper about Jpharmatron: link )

Training Hyperparameters

The model was continually pre-trained with the following settings:

• Mask probability: 15%
• Maximum sequence length: 512 tokens
• Number of training epochs: 6
• Learning rate: 1e-4
• Warm-up steps: 10,000
• Per-device training batch size: 64

Model Card Authors

Created by Takuro Fujii ( [email protected] )