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Deriving and applying facet views of the dewey decimal classification scheme to enhance subject searching in library OPACs

Tinker, Amanda Jayne (2005) Deriving and applying facet views of the dewey decimal classification scheme to enhance subject searching in library OPACs. Doctoral thesis, University of Huddersfield.

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    Classification is a fundamental tool in the organisation of any library collection for
    effective information retrieval. Several classifications exist, yet the pioneering
    Dewey Decimal Classification (DDC) still constitutes the most widely used scheme
    and international de facto standard. Although once used for the dual purpose of
    physical organisation and subject retrieval in the printed library catalogue, library
    classification is now relegated to a singular role of shelf location. Numerous studies
    have highlighted the problem of subject access in library online public access
    catalogues (OPACs). The library OPAC has changed relatively little since its
    inception, designed to find what is already known, not discover and explore.
    This research aims to enhance OPAC subject searching by deriving facets of the DDC
    and populating these with a library collection for display at a View-based searching
    OPAC interface. A novel method is devised that enables the automatic deconstruction
    of complex DDC notations into their component facets. Identifying facets based
    upon embedded notational components reveals alternative, multidimensional subject
    arrangements of a library collection and resolves the problem of disciplinary scatter.
    The extent to which the derived facets enhance users' subject searching perceptions
    and activities at the OPAC interface is evaluated in a small-scale usability study.
    The results demonstrate the successful derivation of four fundamental facets
    (Reference Type, Person Type, Time and Geographic Place). Such facet derivation
    and deconstruction of Dewey notations is recognised as a complex process, owing to
    the lack of a uniform notation, notational re-use and the need for distinct facet
    indicators to delineate facet boundaries. The results of the preliminary usability study
    indicate that users are receptive to facet-based searching and that the View-based
    searching system performs equally as well as a current form fill-in interface and, in
    some cases, provides enhanced benefits. It is concluded that further exploration of
    facet-based searching is clearly warranted and suggestions for future research are

    Item Type: Thesis (Doctoral)
    Additional Information: EThOS Persistent ID
    Subjects: Z Bibliography. Library Science. Information Resources > Z665 Library Science. Information Science
    Z Bibliography. Library Science. Information Resources > Z719 Libraries (General)
    Schools: School of Music, Humanities and Media
    Depositing User: Sharon Beastall
    Date Deposited: 22 Apr 2010 13:32
    Last Modified: 28 Jul 2010 19:55


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