Prepositions and conjunctions in a natural language interfaces to databases

  • Authors:

  • B. J. Javier González;R. Rodolfo A. Pazos;Alexander Gelbukh;Grigori Sidorov;H. Hector Fraire;C. I. Cristina Cruz

  • Affiliations:

  • Instituto Tecnológico de Ciudad Madero, México;Centro Nacional de Investigación y Desarrollo Tecnológico (CENIDET), México;Centro de Investigación en Computación;Centro de Investigación en Computación;Instituto Tecnológico de Ciudad Madero, México;Instituto Tecnológico de Ciudad Madero, México

  • Venue:
  • ISPA'07 Proceedings of the 2007 international conference on Frontiers of High Performance Computing and Networking
  • Year:
  • 2007

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Abstract

This paper present the treatment of prepositions and conjunctions in natural language interfaces to databases (NLIDB)that allows better translation of queries expressed in natural language into formal languages. Prepositions and conjunctions weren't sufficiently studied for their usage in NLIDBs, because most of the NLIDBs just look for keywords in the sentences and focus their analysis on nouns and verbs getting rid of auxiliary words in the query. This paper shows that prepositions and conjunctions can be represented as operations using formal set theory. Additionally, since prepositions and conjunctions keep their meaning in any context, their treatment is domain independent. In our experiments we used Spanish language. We validate our approach using two databases; Northwind and Pubs of SQLServer, with a corpus of 198 different queries for the first one and 70 queries for the second one. The 84% of queries were translated correctly for the database Northwind and 80% for Pubs.