Multilingual question answering with high portability on relational databases

  • Authors:
  • Hanmin Jung;Gary Geunbae Lee

  • Affiliations:
  • Pohang University of Science and Technology, Kyungbuk, Korea;Pohang University of Science and Technology, Kyungbuk, Korea

  • Venue:
  • MultiSumQA '02 proceedings of the 2002 conference on multilingual summarization and question answering - Volume 19
  • Year:
  • 2002

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Abstract

This paper describes a highly-portable multilingual question answering system on multiple relational databases. We apply semantic category and pattern-based grammars, into natural language interfaces to relational databases. Lexico-semantic pattern (LSP) and multi-level grammars achieve portability of languages, domains, and DBMSs. The LSP-based linguistic processing does not require deep analysis that sacrifices robustness and flexibility, but can handle delicate natural language questions. To maximize portability, we drive various dependent parts into two tight corners, i.e., language-dependent part into front linguistic analysis, and domain-dependent and database-dependent parts into backend SQL query generation. Experiments with 779 queries generate only constraint-missing errors, which can be easily corrected by adding new terms, of 2.25% for English and 5.67% for Korean.