SEMPRE is a toolkit for training semantic parsers, which map natural language utterances to denotations (answers) via intermediate logical forms. See TUTORIAL.md for a walkthrough of the system.

If you use this system, please cite:

@inproceedings{berant2013freebase,
  author = {J. Berant and A. Chou and R. Frostig and P. Liang},
  booktitle = {Empirical Methods in Natural Language Processing (EMNLP)},
  title = {Semantic Parsing on {F}reebase from Question-Answer Pairs},
  year = {2013},
}

SEMPRE depends on the following:

• Java 7
• Ruby (version 1.8.7 or 1.9)
• fig
• Google Guava (version 14)
• Jackson JSON Processor (version 2.2)
• TestNG (version 6.8)
• Apache Lucene (version 4.4)
• Stanford CoreNLP (version 3.2)

Aside from Java and Ruby, remaining software dependencies are among what's fetched by the download-depenencies script.

To troubleshoot or check for repository health, you can run a suite of unit tests that come packaged with the system. The command for this is:

./sempre @mode=test -excludegroups xfail

These tests assume you have a connection to a SPARQL endpoint at localhost:3093. To avoid this assumption, you can exclude any tests that require a SPARQL server by instead running:

./sempre @mode=test -excludegroups xfail,sparql

And if you don't have emnlp2013 dependencies downloaded, you'll need to exclude yet another group of unit tests:

./sempre @mode=test -excludegroups xfail,sparql,emnlp2013

All of these tests should pass.

SEMPRE is licensed under the GNU General Public License (v2 or later). Note that this is the /full/ GPL, which allows many free uses, but not its use in distributed proprietary software.