MELT: Materials-aware Continued Pre-training for Language Model Adaptation to Materials Science

This repository is about the paper, MELT: Materials-aware Continued Pre-training for Language Model Adaptation to Materials Science, accepted in Findings of EMNLP 2024. In this project, we are interested in expanding the material-aware entities to continue pre-training the PLMs.

Requirements

• Python 3
• Transformers 4.6.1
• Numpy
• pytorch

Pre-processing

Prepare the pre-training corpora (e.g., scientific papers) in raw_data folder. We upload the sampled pre-training corpora in raw_data folder (train_sampled.txt).

1. Run bash scripts/bash preprocess.sh to normalize and split the raw sentences with max lengths.

• --train_file: A directory containing raw text examples.
• --output_train_norm_file: A directory containing pre-processed examples.

2. Run bash scripts/find_entities.sh to preprocess the positions of material-aware entities in the pre-processed sentences.

• --preprocessed_data_path: A directory containing pre-processed examples.
• --entity_path: A directory containing material-aware entities, which are expanded by ChemDataExtractor and Mat2Vec.
• --output_folder_path: A directory containing output datasets.

Pre-training

To continued pre-train PLMs, run bash scripts/pretrain.sh for distillation.

• --masking_strategy: Set the masking strategy. Choose strategies from: random, material, curriculum
• --lr: Set the learning rate.
• --batch_size: Set the batch size for conducting at once.
• --step_batch_size: Set the batch size for updating per each step (If the memory of GPU is enough, set the batch_size and step_batch_size the same.)
• --data_path: A directory containing pre-processed examples.
• --masking_ratio : Set the masking ratio for the Material-aware Entity Masking
• --curriculum_num : Set the number of curriculum for curriculum-based Entity Learning
• --model_save_path: Set the directory for saving the pre-trained models

Fine-tuning

Run the following files with the pre-trained weights using argument name --load_weight

1. MatSciNLP: bash scripts/run_matscinlp.sh

2. NER (SOFC-NER, SOFC-Filling, MatScholar): bash scripts/run_ner.sh

3. Classification (Glass Science): bash scripts/run_cls.sh

Contact Info

For help or issues using MELT, please submit a GitHub issue.

For personal communication related to MELT, please contact Junho Kim <[email protected]>.