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Persistent URL http://purl.org/net/epubs/work/37584
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Record Id 37584
Title A Theory of Retrieval Using Structured Vocabularies
Abstract This presentation gives an overview of a report on a formal theory of retrieval using controlled vocabularies that have a simple and intuitive structure, to provide the necessary theoretical foundations for the development of Semantic Web languages and design patterns for distributed retrieval applications. The main body of this report is devoted to the articulation of such a theory. The theory is expressed formally through the use of mathematical notation, with the intention that this level of formality will provide the bridge between informal requirements specifications and the implementation of effective retrieval applications in computer systems. Specifically, a theory is developed to describe the ways in which a structured vocabulary may be used to construct an index over a collection of objects and then used to express queries which may be evaluated against an index to obtain a set of results. This theory is extended to consider ways in which both the precision and recall of retrieval strategies may be improved, through the use of expansion and ranking techniques and through ?coordination?. The problem of translating between controlled vocabularies is also considered. The theory attempts to formalise, unify and extend the traditional wisdom of the library sciences regarding the use of thesauri, classification schemes, subject heading systems, taxonomies and other types of structured vocabulary, so that proven techniques and methodologies may be transferred to a Semantic Web context.
Organisation CCLRC , ESC
Keywords Semantic Web , Information Retrieval , Controlled Vocabularies , Query Expansion
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Language English (EN)
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Presentation Presented at Networked Knowledge Organisation Systems (NKOS), Alicante, Spain, September 2006. presentation.odp