This is the code base for ACL'19 paper Complex Question Decomposition for Semantic Parsing.

Download ComplexWebQ data, prepare environment and libraries.

In order to run preprocess, you should put the following files in DATA_PATH directory, DATA_PATH is defined in the script.

• ComplexWebQuestions_train.json
• ComplexWebQuestions_dev.json
• ComplexWebQuestions_test.json (we need any other information in above files)
• train.json, dev.json, test.json (we need the splitted sub questions in these files, it is not included in raw data, but we generate and prepare them for users in complex_questions directory, also you can generate them by following steps)

• cd WebAsKB.
• Prepare a StanfordCoreNLP server in localhost following 1.2.2.
• Change data_dir setting in WebAsKB/config.py.
• Change EVALUATION_SET setting in WebAsKB/config.py to train, dev and test, and Run python webaskb_run.py gen_golden_sup for three times.
• By this time, you can get train.json, dev.json, test.json in DATA_PATH.

In order to run the POS annotation process, you should download and start a StanfordCoreNLP server in localhost:9003.

• Download from https://nlp.stanford.edu/software/stanford-corenlp-full-2018-10-05.zip, unzip and cd to it.
• Start server using java -mx4g -cp "*" edu.stanford.nlp.pipeline.StanfordCoreNLPServer -port 9003 -timeout 15000.

We provide a template script scripts/run.sh for the users, and you need to change the following directory settings at least to run it.

• DATA_PATH: where the data root directory is.
• RUN_T2T: the root directory of the code base.

Now run scripts/run.sh preprocess, the command will generate the data format for our model, and annotate POS labels.

Prepare Glove pretrained embedding file glove.6B.300d.txt and put it in DATA_PATH/embed/.

scripts/run.sh prepare will shuffle the dataset and build vocabulary file.

To train our decompose model, use scripts/run.sh train.

To train our semantic parsing model, use scripts/run.sh train_lf.

scripts/run.sh test, it will generate decomposed query with a input file, and print bleu-4 & rouge-l score compared to references.

scripts/run.sh test_lf, it will generate logical form with a input file, and print EM score compared to references.

If you use this code in your research, please kindly cite our paper via the following BibTeX.

@inproceedings{Zhang2019HSP,
author = {Zhang, Haoyu and Cai, Jingjing and Xu, Jianjun and Wang, Ji},
booktitle = {Conference of the Association for Computational Linguistics (ACL)},
year = {2019}
}