Document (#27645)

Author
Chowdhury, S.
Chowdhury, G.G.
Title
Using DDC to create a visual knowledge map as an aid to online information retrieval
Source
Knowledge organization and the global information society: Proceedings of the 8th International ISKO Conference 13-16 July 2004, London, UK. Ed.: I.C. McIlwaine
Imprint
Würzburg : Ergon Verlag
Year
2004
Pages
S.133-138
Series
Advances in knowledge organization; vol.9
Abstract
Selection of search terms in an online search environment can be facilitated by the visual display of a knowledge map showing the various concepts and their links. This paper reports an a preliminary research aimed at designing a prototype knowledge map using DDC and its visual display. The prototype knowledge map created using the Protégé and TGViz freeware has been demonstrated, and further areas of research in this field are discussed.
Content
1. Introduction Web search engines and digital libraries usually expect the users to use search terms that most accurately represent their information needs. Finding the most appropriate search terms to represent an information need is an age old problem in information retrieval. Keyword or phrase search may produce good search results as long as the search terms or phrase(s) match those used by the authors and have been chosen for indexing by the concerned information retrieval system. Since this does not always happen, a large number of false drops are produced by information retrieval systems. The retrieval results become worse in very large systems that deal with millions of records, such as the Web search engines and digital libraries. Vocabulary control tools are used to improve the performance of text retrieval systems. Thesauri, the most common type of vocabulary control tool used in information retrieval, appeared in the late fifties, designed for use with the emerging post-coordinate indexing systems of that time. They are used to exert terminology control in indexing, and to aid in searching by allowing the searcher to select appropriate search terms. A large volume of literature exists describing the design features, and experiments with the use, of thesauri in various types of information retrieval systems (see for example, Furnas et.al., 1987; Bates, 1986, 1998; Milstead, 1997, and Shiri et al., 2002).
Footnote
Für die Tools vgl.: Protégé: http://protege.stanford.edu/ TGViz: http://www.ecs.soton.ac.uk/~ha/TGVizTab/TGVizTab.htm
Theme
Klassifikationssysteme im Online-Retrieval
Suchoberflächen
Visualisierung
Object
DDC
TGViz
Protégé

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