DC Field | Value | Language |
---|---|---|
dc.contributor.author | KIM, YW | ko |
dc.contributor.author | Kim, JinHyung | ko |
dc.date.accessioned | 2013-02-24T09:44:42Z | - |
dc.date.available | 2013-02-24T09:44:42Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1990-06 | - |
dc.identifier.citation | Journal of Documentation, v.46, no.2, pp.113 - 136 | - |
dc.identifier.issn | 0022-0418 | - |
dc.identifier.uri | http://hdl.handle.net/10203/56174 | - |
dc.description.abstract | This paper discusses a knowledge based information retrieval model with hierarchical thesaurus. The model computes the conceptual distance between a query and an object and both are indexed with weighted terms from a hierarchical thesaurus. The hierarchical thesaurus is represented by a hierarchical-concept graph (HCG) in which nodes represent concepts and directed edges represent generalisation relationships. Rada et al. have developed a similar model. However, their model considered only a binary indexing scheme and revealed some counter-intuitive results. Our proposed model extends theirs by allowing the index term and the edge of the HCG to be weighted. A new concept mapping method is devised to overcome Rada's counter-intuitive results. In addition, a scheme for allowing Boolean operators in user queries is provided with a formula for computing conceptual distance from negated index terms. Experimental results have shown that our model simulates human performance more closely than Rada's model. | - |
dc.language | English | - |
dc.publisher | Emerald Group Publishing Ltd. | - |
dc.title | A model of knowledge based information retrieval with hierarchical concept graph | - |
dc.type | Article | - |
dc.identifier.scopusid | 2-s2.0-0001090099 | - |
dc.type.rims | ART | - |
dc.citation.volume | 46 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 113 | - |
dc.citation.endingpage | 136 | - |
dc.citation.publicationname | Journal of Documentation | - |
dc.contributor.localauthor | Kim, JinHyung | - |
dc.contributor.nonIdAuthor | KIM, YW | - |
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