Literature QA

Source code and dataset for "LiteratureQA: A Question Answering Corpus with Graph Knowledge on Academic Literature". This repo is partially based on BERT, PyTorch version of BERT and ERNIE, and we thank for their great works.

Requirements

• Python3.7
• Pytorch>=0.4.1
• tqdm
• boto3
• requests
• pymysql
• tensorflow2
• nltk
• tensorboardX

Due to some reasons, we use tensorflow2 to process data in some scripts.

Quick install by following command.

pip install -r requirement.txt

Prepare graph embeddings and pre-train data

1. Build KG

Note that a large version KG with 35x number of papers is also provided, set the IS_LARGE into true in build_kg.py to activate. This is not recommended because it will notably increase the time consumation of graph embedding process.

cd preprocess
python build_kg.py

2. Compile training execute file of transE

To speed up graph embedding process, we use the highly optimization version of transE from Fast-TransX. In some cases, it may occur warnings when compile, and you can ignore them.

g++ transE.cpp -o transE -pthread -march=native

3. Run graph embedding by transE

It usually takes about 10 ~ 20 hours.

./transE -size 100 -input ./acekg/ -output ./acekg_embed/ -thread 32 -epochs 10000 -alpha 0.001 -margin 2.0

4. Build corpus

A multi-thread version is also provided.

# python build_corpus_mthreads.py
python build_corpus.py

(Optional) 5. Annotate LiteratureQA dataset

This can be skip because we have already put annotated files into code/dataset.

python annotate_dataset.py

6. Create ids

# with 4 processes
cd ..
python preprocess/create_ids.py 4

7. Create instances

# with 4 processes
python preprocess/create_insts.py 4

8. Merge instances

python code/merge.py

Pre-train and Finetune

1. Download the pretrain model

Download the (12/768 BERT-Base) binary file and move it to code/models/pretrain_base.

2. Re-pretrain from BERT-base

python code/run_pretrain.py --do_train --data_dir preprocess/merge --bert_model code/models/pretrain_base --output_dir code/models/pretrain_out/ --task_name pretrain --max_seq_length 256

3. Finetune for QA task on LiteratureQA dataset

cp code/models/pretrain_base/{*.txt,*.json} code/models/pretrain_out/
python code/run_qa.py --do_train

4. Run prediction on the test set

Uncomment and run the first line if no config files in the model folder.

# cp code/models/pretrain_base/{*.txt,*.json} code/models/qa_out/
python code/run_qa.py --do_predict --qa_model code/models/qa_out

5. Evaluate the prediction result of LiteratureQA test set to reproduce the F1 & EM score

cd code
python evaluate.py dataset/test.json models/qa_out/predictions.json

(Optional) Download the finetuned model

You can also reproduce the results by downloading our finetuned models and trained graph embeddings (quick_check.zip), and then follow the steps. This can save your time.

1. Unzip and move the files

Unzip the zip file, move the folders to corresponding location (code/models/qa_out, preprocess/acekg, preprocess/acekg_embed) and cover the original folders (if have).

2. Run prediction on the test set and Evaluate the prediction result

python code/run_qa.py --do_predict --qa_model code/models/qa_out
cd code
python evaluate.py dataset/test.json models/qa_out/predictions.json

The EM/F1(%) should be 67.63/72.75 as shown in the paper.

About the dataset

Currently only the old version literatureQA dataset that includes 7,000 abstracts and 140,000 QA pairs is provided at this repo, and you can find it in code/raw_dataset/.