Title page for etd-0828103-162122


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URN etd-0828103-162122
Author Ju-Fen Hsueh
Author's Email Address No Public.
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Department Information Management
Year 2002
Semester 2
Degree Master
Type of Document
Language English
Title Learning ontology from Web documents for supporting Web query
Date of Defense 2003-07-30
Page Count 92
Keyword
  • query expansion
  • ontology leaning
  • ontology
  • Abstract This thesis proposes a query expansion mechanism based on ontology. Automatic query expansion has facilitated web pages search in several ways. An external knowledge resource can help user identify the searching domain and efficient keywords. Ontology is taken as the metadata of a knowledge domain. Query could be expanding in different approaches based on ontology. In this research, an ontology learning process is implemented. With no initial ontology as backbone, domain ontology is constructed from World Wild Web document semi-automatically. Three expanding approaches based on concepts and their relations are proposed. Ontology learning result and expanding approaches are evaluated by comparing the different search results in atypical IR system.
    Advisory Committee
  • San-Yi Huang - chair
  • Chih-Ping Wei - co-chair
  • Fu-Ren Lin - advisor
  • Files
  • etd-0828103-162122.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2003-08-28

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