Introduction

This is PointSQL, the source codes of Natural Language to Structured Query Generation via Meta-Learning and Pointing Out SQL Queries From Text from Microsoft Research. We present the setup for the WikiSQL experiments.

Training a New Model

Data Pre-processing

• Download a preprocessed dataset link to input/
• Untar the file tar -xvjf input.tar.bz2

Reproduce Preprocess Steps

1. Download data from WikiSQL.

$ cd wikisql_data
$ wget https://github.com/salesforce/WikiSQL/raw/master/data.tar.bz2
$ tar -xvjf data.tar.bz2

2. Put the lib directory under wikisql_data/scripts/
3. Run annotation using Stanza and preproces the dataset

$ cd wikisql_data/scripts/
$ python annotate.py
$ python prepare.py

4. Put the train/dev/test data into input/data for model training/testing.
5. Use relevance function to prepare relevance files and put them under input/nl2prog_input_support_rank

python wikisql_data/scripts/relevance.py

6. Download pretrained embeddings from glove and character n-gram embeddings and put them under input/

Note we use a new preprocessed dataset (v2) in the Execute-Guided Decoding paper

• A preprocessed dataset can be found here, where the wikisql_train.dat, wikisql_test.dat, wikisql_dev.dat are the files that can be directly used in training.

Note: the version 2 dataset matches the v1.1 release of WikiSQL. The preprocessing script wikisql_data/scripts/prepare_v2.py (python3 required) processes WikiSQL v1.1 raw data and table files to generate wikisql_train.dat, wikisql_test.dat, wikisql_dev.dat.

Training

Meta + Sum loss training

$ OUTDIR=output/meta_sum
$ mkdir $OUTDIR
$ python run.py --input-dir ./input \
    --output-dir $OUTDIR \
    --config config/nl2prog.meta_2_0.001.rank.config  \
    --meta_learning_rate 0.001 --gradient_clip_norm 5 \
    --num_layers 3  --num_meta_example 2 \
    --meta_learning --production

Evaluation

• Due to the preprocessing error, we ignore some development (see input/data/wikisql_err_dev.dat) and test (see input/data/wikisql_err_test.dat) set examples, we treat them as incorrect directly.

• Run evaluation as follows (replace model_zoo/meta_sum/table_nl_prog-40 with $OUTDIR/table_nl_prog-?? with the last checkpoint in the folder):

• Development set

$ mkdir -p ${OUTDIR}_dev
$ python run.py --input-dir ./input --output-dir ${OUTDIR}_dev \ 
    --config config/nl2prog.meta_2_0.001.rank.devconfig \
    --meta_learning --test-model model_zoo/meta_sum/table_nl_prog-40  --production

• Run execution for developement set as follows:

  $ cp ${OUTDIR}_dev/test_top_1.log dev_top_1.log
  $ python2 execute_dev.py 
    #Q2 (predition) result is wrong: 1254
    #Q1 or Q2 fail to parse: 0
    #Q1 (ground truth) exec to None: 20
    #Q1 (ground truth) failed to execute: 0
    Logical Form Accuracy: 0.631383269546
    Execute Accuracy: 0.68277747403
  

• Test set

$ mkdir -p ${OUTDIR}_test
$ python run.py --input-dir ./input --output-dir ${OUTDIR}_test \ 
    --config config/nl2prog.meta_2_0.001.rank.testconfig \
    --meta_learning --test-model model_zoo/meta_sum/table_nl_prog-40  --production

• Run execution for test set as follows:

  $ cp ${OUTDIR}_test/test_top_1.log .
  $ python2 execute.py
    #Q2 (predition) result is wrong: 2556
    #Q1 or Q2 fail to parse: 0
    #Q1 (ground truth) exec to None: 48
    #Q1 (ground truth) failed to execute: 0
    Logical Form Accuracy: 0.628073829775
    Execute Accuracy: 0.680379563733
  

• Baseline model on test set

$ OUTDIR=output/base_sum
$ python run.py --input-dir ./input --output-dir ${OUTDIR}_test \
   --config config/nl2prog.testconfig --production  \
   --test-model model_zoo/base_sum/table_nl_prog-79 --production

• Run execution for the baseline model on test set as follows:

  $ cp ${OUTDIR}_test/test_top_1.log .
  $ python2 execute.py
    #Q2 (predition) result is wrong: 2636
    #Q1 or Q2 fail to parse: 0
    #Q1 (ground truth) exec to None: 48
    #Q1 (ground truth) failed to execute: 0
    Logical Form Accuracy: 0.614592374009
    Execute Accuracy: 0.668055314471
  

Pre-trained Models

• Download pretrained model checkpoints to model_zoo/

• Run tar -xvjf model_zoo.tar.bz2 to extract pretrain models.

  • Meta + Sum loss: model_zoo/meta_sum
  • Base Sum loss: model_zoo/base_sum

Requirements

• Tensorflow 1.4
• python 3.6
• Stanza

Citation

If you use the code in your paper, then please cite it as:

@inproceedings{pshuang2018PT-MAML,
  author    = {Po{-}Sen Huang and
               Chenglong Wang and
               Rishabh Singh and
               Wen-tau Yih and
               Xiaodong He},
  title     = {Natural Language to Structured Query Generation via Meta-Learning},
  booktitle = {NAACL},
  year      = {2018},
}

@inproceedings{2018executionguided,
  author    = {Chenglong Wang and
               Po{-}Sen Huang and
               Alex Polozov and
               Marc Brockschmidt and 
               Rishabh Singh},
  title = "{Execution-Guided Neural Program Decoding}",
  booktitle = {ICML workshop on Neural Abstract Machines & Program Induction v2 (NAMPI)},
  year = {2018}
}

and

@techreport{chenglong,
  author = {Wang, Chenglong and Brockschmidt, Marc and Singh, Rishabh},
  title = {Pointing Out {SQL} Queries From Text},
  number = {MSR-TR-2017-45},
  year = {2017},
  month = {November},
  url = {https://www.microsoft.com/en-us/research/publication/pointing-sql-queries-text/},
}

Contributing

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This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.