Document (#39232)

Author
Järvelin, K.
Kristensen, J.
Niemi, T.
Sormunen, E.
Keskustalo, H.
Title
¬A deductive data model for query expansion
Source
Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al
Imprint
New York, NY : ACM
Year
1996
Pages
S.235-243
Abstract
We present a deductive data model for concept-based query expansion. It is based on three abstraction levels: the conceptual, linguistic and occurrence levels. Concepts and relationships among them are represented at the conceptual level. The expression level represents natural language expressions for concepts. Each expression has one or more matching models at the occurrence level. Each model specifies the matching of the expression in database indices built in varying ways. The data model supports a concept-based query expansion and formulation tool, the ExpansionTool, for environments providing heterogeneous IR systems. Expansion is controlled by adjustable matching reliability.
Theme
Semantisches Umfeld in Indexierung u. Retrieval
Wissensrepräsentation

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