Learning From Unannotated QA Pairs to Analogically Disambiguate and Answer Questions

Authors

  • Maxwell Crouse Northwestern University
  • Clifton McFate Northwestern University
  • Kenneth Forbus Northwestern University

Keywords:

Artificial Intelligence, Question-Answering

Abstract

Creating systems that can learn to answer natural language questions has been a longstanding challenge for artificial intelligence. Most prior approaches focused on producing a specialized language system for a particular domain and dataset, and they required training on a large corpus manually annotated with logical forms. This paper introduces an analogy-based approach that instead adapts an existing general purpose semantic parser to answer questions in a novel domain by jointly learning disambiguation heuristics and query construction templates from purely textual question-answer pairs. Our technique uses possible semantic interpretations of the natural language questions and answers to constrain a query-generation procedure, producing cases during training that are subsequently reused via analogical retrieval and composed to answer test questions. Bootstrapping an existing semantic parser in this way significantly reduces the number of training examples needed to accurately answer questions. We demonstrate the efficacy of our technique using the Geoquery corpus, on which it approaches state of the art performance using 10-fold cross validation, shows little decrease in performance with 2-folds, and achieves above 50% accuracy with as few as 10 examples.

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Published

2018-04-25

How to Cite

Crouse, M., McFate, C., & Forbus, K. (2018). Learning From Unannotated QA Pairs to Analogically Disambiguate and Answer Questions. Proceedings of the AAAI Conference on Artificial Intelligence, 32(1). Retrieved from https://ojs.aaai.org/index.php/AAAI/article/view/11329

Issue

Section

AAAI Technical Track: Cognitive Systems