Phrase-based definitional question answering using definition terminology

Kyoung Soo Han, Young In Song, Sang Bum Kim, Hae Chang Rim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


We propose a definitional question answering method using linguistic information and definition terminology-based ranking. We introduce syntactic definition patterns which are easily constructed and reduce the coverage problem. Phrases are extracted using the syntactic patterns, and the redundancy is eliminated based on lexical overlap and semantic matching. In order to rank the phrases, we used several evidences including external definitions and definition terminology. Although external definitions are useful, it is obvious that they cannot cover all the possible targets. The definition terminology score, reflecting how the phrase is definition-like, is devised to assist the incomplete external definitions. Experimental results support our method is effective.

Original languageEnglish
Title of host publicationInformation Retrieval Technology - Second Asia Information Retrieval Symposium, AIRS 2005, Proceedings
PublisherSpringer Verlag
Number of pages14
ISBN (Print)3540291865, 9783540291862
Publication statusPublished - 2005
Event2nd Asia Information Retrieval Symposium, AIRS 2005 - Jeju Island, Korea, Republic of
Duration: 2005 Oct 132005 Oct 15

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3689 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other2nd Asia Information Retrieval Symposium, AIRS 2005
Country/TerritoryKorea, Republic of
CityJeju Island

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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