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2008-01-19Konferenzveröffentlichung DOI: 10.18452/1295
Improving Subject Searching in Databases through aCombination of Descriptors and UDC
dc.contributor.authorGranados, Mariàngels
dc.contributor.authorNicolau, Anna
dc.contributor.editorHauke, Petra
dc.contributor.editorKalbow, Annette
dc.contributor.editorJacob, Boris
dc.contributor.editorMarten, Diana
dc.contributor.editorGrzeschik, Kathrin
dc.contributor.editorStöhr, Matti
dc.date.accessioned2017-06-15T12:27:46Z
dc.date.available2017-06-15T12:27:46Z
dc.date.created2008-01-18
dc.date.issued2008-01-19
dc.identifier.urihttp://edoc.hu-berlin.de/18452/1947
dc.description.abstractProblems with subject access to online catalogues and databases are not new. Studies on the use of OPACs have revealed two apparently endemic problems: on the one hand, the large number of searches with zero hits (failed searches) and on the other, the retrieval of an excessive amount of bibliographic records (information overload). In this paper we describe a new information retrieval technique based on the combination of descriptor weighting and the use of the Universal Decimal Classification (UDC) call numbers. The use of classification call numbers in order to search the catalogue has traditionally been very restricted. In most catalogues, call numbers are used only as topographical indicators and are not searchable. The new system described here makes much fuller use of them. The system is based on the hypothesis that a set of descriptors correspond to a UDC call number. Through the analysis of the frequency of distribution of descriptors and call numbers, we create a set of clusters that allow increasing precision and recall. At the same time, these clusters offer alternative search modes, making it possible to systematize the indexing process and increase its consistency. Here we present a case study of the use of the system with the ERIC database.eng
dc.language.isoeng
dc.publisherHumboldt-Universität zu Berlin
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectAccess to informationeng
dc.subjectInformation retrievaleng
dc.subjectInformation searchingeng
dc.subjectUDCeng
dc.subjectdescriptorseng
dc.subject.ddc020 Bibliotheks- und Informationswissenschaften
dc.titleImproving Subject Searching in Databases through aCombination of Descriptors and UDC
dc.typeconferenceObject
dc.identifier.urnurn:nbn:de:kobv:11-10083435
dc.identifier.doihttp://dx.doi.org/10.18452/1295
dc.subject.dnb02 Schrift, Buch, Bibliothek, Information und Dokumentation
local.edoc.pages8
local.edoc.type-nameKonferenzveröffentlichung
local.edoc.container-typeconference
local.edoc.container-type-nameKonferenz
dc.description.event16th BOBCATSSS Symposium 2008 - Providing Access to Information for Everyone, BOBCATSSS 2008, 28.01.2008 - 30.01.2008, Zadar, Croatia, pp 151-158
dcterms.bibliographicCitation.booktitle16th BOBCATSSS Symposium 2008
dcterms.bibliographicCitation.booktitleProviding Access to Information for Everyone
dcterms.bibliographicCitation.booktitleBOBCATSSS 2008
dcterms.bibliographicCitation.pagestart151
dcterms.bibliographicCitation.pageend158

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