A Logic-Based Approach for Query Refinement in Ontology-Based Information Retrieval S

Authors:
Nenad Stojanovic;Ljiljana Stojanovic
Affiliations:
University of Karlsruhe;University of Karlsruhe
Venue:
ICTAI '04 Proceedings of the 16th IEEE International Conference on Tools with Artificial Intelligence
Year:
2004

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Abstract

In this paper we present a logic-based approach for query refinement in ontology-based information portal. The approach enables a user to navigate through the information content incrementally and interactively. In each refinement step a user is provided with a complete but minimal set of refinements, which enables him to develop/express his information need in a step-by-step fashion. The approach is based on the model-theoretic interpretation of the refinement problem, so that the query refinement process can be considered as the process of inferring all queries which are subsumed by a given query. Moreover, query refinements are ranked according to their relevance to userýs needs, whereas these needs are on-line discovered by analysing a userýs behaviour. The approach is very suitable for modelling information retrieval tasks based on the database repositories, like searching product catalogues.