Resolution of semantic queries on a set of web services

Authors:
Jordi Paraire;Rafael Berlanga;Dolores M. Llidó
Affiliations:
Departamento de Lenguajes y Sistemas Informáticos, Universitat Jaume I de Castelló;Departamento de Lenguajes y Sistemas Informáticos, Universitat Jaume I de Castelló;Departamento de Lenguajes y Sistemas Informáticos, Universitat Jaume I de Castelló
Venue:
DEXA'05 Proceedings of the 16th international conference on Database and Expert Systems Applications
Year:
2005

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Abstract

In this article, we present an approach to executing semantic queries on a set of domain-related Web services. The aim of this architecture is to obtain information from the available Web services, by mapping inputs and outputs of the Web service methods into concepts of an ontology defined in OWL (Ontology Web Language). For this purpose, we extend OWL-S to assign concepts and their contexts to the inputs and outputs of the methods, so that each method parameter is annotated without ambiguity. The paper also presents a graph-based data structure in which all the information needed for the semantic composition of annotated Web services is stated. Finally, we show how this data structure is used to solve semantic queries over the Web services.