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Semantic Web uses domain ontology to bridge the gap among the members of a domain through minimization of conceptual and terminological incompatibilities. However, several barriers must be overcome before domain ontology becomes a practical and useful tool. One important issue is identification and selection of domain concepts for domain ontology learning when several hundreds or even thousands of terms are extracted and available from relevant text documents shared among the members of a domain. We present a novel domain concept acquisition and selection approach for ontology learning that uses affinity propagation algorithm, which takes as input semantic and structural similarity between pairs of extracted terms called data points. Real-valued messages are passed between data points (terms) until high quality set of exemplars (concepts) and cluster iteratively emerges. All exemplars will be considered as domain concepts for learning domain ontologies. Our empirical results show that our approach achieves high precision and recall in selection of domain concepts using less number of iterations.
Date of Conference: 5-6 Sept. 2011