GAP-text2SQL: Learning Contextual Representations for Semantic Parsing with Generation-Augmented Pre-Training
Code and model from our AAAI 2021 paper
Updates
[2020/02/05] Support to run the model on own databases and queries. Check out the notebook.
Abstract
Most recently, there has been significant interest in learning contextual representations for various NLP tasks, by leveraging large scale text corpora to train large neural language models with self-supervised learning objectives, such as Masked Language Model (MLM). However, based on a pilot study, we observe three issues of existing general-purpose language models when they are applied to text-to-SQL semantic parsers: fail to detect column mentions in the utterances, fail to infer column mentions from cell values, and fail to compose complex SQL queries. To mitigate these issues, we present a model pre-training framework, Generation-Augmented Pre-training (GAP), that jointly learns representations of natural language utterances and table schemas by leveraging generation models to generate pre-train data. GAP MODEL is trained on 2M utterance-schema pairs and 30K utterance-schema-SQL triples, whose utterances are produced by generative models. Based on experimental results, neural semantic parsers that leverage GAP MODEL as a representation encoder obtain new state-of-the-art results on both SPIDER and CRITERIA-TO-SQL benchmarks.
Setup
conda create --name gap-text2sql python=3.7
source activate gap-text2sql
conda install pytorch=1.5 cudatoolkit=10.2 -c pytorch
pip install -r requirements.txt
python -c "import nltk; nltk.download('stopwords'); nltk.download('punkt')"
Download the dataset
pip install gdown
cd rat-sql-gap
gdown --id 1_AckYkinAnhqmRQtGsQgUKAnTHxxX5J0
unzip spider.zip
bash data/spider/generate.sh ./spider
Build dataset directory
mkdir data/spider-bart
cp ./spider/tables.json data/spider-bart/
cp ./spider/train_spider.json data/spider-bart/
cp ./spider/train_others.json data/spider-bart/
cp ./spider/dev.json data/spider-bart/
ln -s $(pwd)/spider/database data/spider-bart/database
Download the library
mkdir third_party
wget http://nlp.stanford.edu/software/stanford-corenlp-full-2018-10-05.zip
unzip stanford-corenlp-full-2018-10-05.zip -d third_party/
Start the Stanford library
pushd third_party/stanford-corenlp-full-2018-10-05
nohup java -mx4g -cp "*" edu.stanford.nlp.pipeline.StanfordCoreNLPServer -port 8999 -timeout 15000 > server.log &
popd
Download the checkpoint
mkdir -p logdir/bart_run_1/bs\=12\,lr\=1.0e-04\,bert_lr\=1.0e-05\,end_lr\=0e0\,att\=1/
mkdir ie_dirs
aws s3 cp s3://gap-text2sql-public/checkpoint-artifacts/gap-finetuned-checkpoint logdir/bart_run_1/bs\=12\,lr\=1.0e-04\,bert_lr\=1.0e-05\,end_lr\=0e0\,att\=1/model_checkpoint-00041000
mkdir -p pretrained_checkpoint
aws s3 cp s3://gap-text2sql-public/checkpoint-artifacts/pretrained-checkpoint pretrained_checkpoint/pytorch_model.bin
Alternatively, you can download them here if you don't have awscli: gap-finetuned-checkpoint and pretrained-checkpoint
curl https://gap-text2sql-public.s3.amazonaws.com/checkpoint-artifacts/gap-finetuned-checkpoint -o logdir/bart_run_1/bs\=12\,lr\=1.0e-04\,bert_lr\=1.0e-05\,end_lr\=0e0\,att\=1/model_checkpoint-00041000
curl https://gap-text2sql-public.s3.amazonaws.com/checkpoint-artifacts/pretrained-checkpoint -o pretrained_checkpoint/pytorch_model.bin
Preprocess dataset
python run.py preprocess experiments/spider-configs/gap-run.jsonnet
Inference
python run.py eval experiments/spider-configs/gap-run.jsonnet
You then get the inference results and evaluation results in the paths:ie_dirs/bart_run_1_true_1-step41000.infer and ie_dirs/bart_run_1_true_1-step41000.eval.
Training
python run.py train experiments/spider-configs/gap-run.jsonnet
Security
See CONTRIBUTING for more information.
License
This project is licensed under the Apache-2.0 License.
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