ExpansionTool: Formal definition of concept-based query expansion and construction

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dc.contributor.author Järvelin, Kalervo -
dc.contributor.author Kekäläinen, Jaana -
dc.contributor.author Niemi, Timo -
dc.date.accessioned 2012-06-17T20:11:36Z
dc.date.available 2012-06-12 10:28:17 -
dc.date.available 2012-06-17T20:11:36Z
dc.date.issued 2001 -
dc.identifier.uri http://tampub.uta.fi/handle/10024/65757
dc.description.abstract We develop a deductive data model for concept-based query expansion. It is based on three abstraction levels: the conceptual, linguistic and string levels. Concepts and relationships among them are represented at the conceptual level. The linguistic level gives natural language expressions for concepts. Each expression has one or more matching patterns at the string level. The models specify the matching of the expression in database indices built in varying ways. The data model supports a concept-based query expansion and formulation tool, the ExpansionTool, for heterogeneous IR system environments. Conceptual expansion is implemented by a novel operator for traversing collections of cyclic transitive concept networks. The number of expansion links followed, their types, and weights can be used to control expansion. -
dc.format.extent 34 -
dc.language.iso en -
dc.title ExpansionTool: Formal definition of concept-based query expansion and construction -
dc.type fi=Erillisteos | en=Monograph| -
dc.identifier.urn urn:nbn:uta-3-108 -
dc.relation.numberinseries 2001-1 -
dc.type.version fi=Kustantajan versio | en=Publisher's version| -
dc.seriesname Department of Information Studies: Research Notes -
dc.subject.okm fi=Tietojenkäsittelyoppi ja informaatiotieteet | en=Computer and information sciences| -
dc.oldstats 632 -

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