An information retrieval approach based on discourse type

D. Y. Wang, Wing Pong Robert Luk, K. F. Wong, K. L. Kwok

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

In ad hoc information retrieval (IR), some information need (e.g., find the advantages and disadvantages of smoking) requires the explicit identification of information related to the discourse type (e.g., advantages/ disadvantages) as well as to the topic (e.g., smoking). Such information need is not uncommon and may not be satisfied by using conventional retrieval methods. We extend existing retrieval models by adding a re-ranking strategy based on a novel graph-based retrieval model using document contexts that are called information units (IU). For evaluation, we focused on a discourse type that appeared in a subset of TREC topics where the retrieval effectiveness achieved by our conventional retrieval models for those topics was low. We showed that our approach is able to enhance the retrieval effectiveness for the selected TREC topics. This shows that our preliminary investigation is promising and deserves further investigation.
Original languageEnglish
Title of host publicationNatural Language Processing and Information Systems - 11th International Conference on Applications of Natural Language to Information Systems, NLDB 2006, Proceedings
PublisherSpringer Verlag
Pages197-202
Number of pages6
ISBN (Print)3540346163, 9783540346166
Publication statusPublished - 1 Jan 2006
Event11th International Conference on Applications of Natural Language to Information Systems, NLDB 2006 - Klagenfurt, Austria
Duration: 31 May 20062 Jun 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3999 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference11th International Conference on Applications of Natural Language to Information Systems, NLDB 2006
CountryAustria
CityKlagenfurt
Period31/05/062/06/06

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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