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En komparativ studie av fem rankningsalgoritmer för query expansion
University of Borås, Swedish School of Library and Information Science.
University of Borås, Swedish School of Library and Information Science.
2002 (Swedish)Independent thesis Advanced level (degree of Master (One Year))Student thesisAlternative title
A comparative study of five ranking algorithms for query expansion (English)
Abstract [en]

The purpose of this thesis is to compare five different ranking algorithms for query expansion. The algorithms compared are f4, f4mod, porter, wpq, and emim. This is done using a TREC collection, a selection of topics, and relevance judgements. Relative recall is measured before and after the expansion of the query. The study shows that all of the algorithms manage to increase the relative recall, f4 being the one most successful.

Place, publisher, year, edition, pages
University College of Borås. Swedish School of Library and Information Science , 2002.
Series
Magisteruppsats i biblioteks- och informationsvetenskap vid Bibliotekshögskolan/Biblioteks- och informationsvetenskap, ISSN 1404-0891 ; 2002:9
Keywords [en]
query expansion, ir-system, återvinningseffektivitet
Keywords [sv]
rankningsalgoritmer, testkollektioner
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:hb:diva-18322Local ID: 2320/1635OAI: oai:DiVA.org:hb-18322DiVA, id: diva2:1310238
Note
Uppsatsnivå: DAvailable from: 2019-04-30 Created: 2019-04-30

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf