Two-Phase Web Service Discovery Based on Rich Functional Descriptions

  • Authors:

  • Michael Stollberg;Uwe Keller;Holger Lausen;Stijn Heymans

  • Affiliations:

  • Digital Enterprise Research Institute Innsbruck (DERI Austria), Institute for Computer Science, University of Innsbruck, Technikerstrasse 21a, A-6020 Innsbruck, Austria;Digital Enterprise Research Institute Innsbruck (DERI Austria), Institute for Computer Science, University of Innsbruck, Technikerstrasse 21a, A-6020 Innsbruck, Austria;Digital Enterprise Research Institute Innsbruck (DERI Austria), Institute for Computer Science, University of Innsbruck, Technikerstrasse 21a, A-6020 Innsbruck, Austria;Digital Enterprise Research Institute Innsbruck (DERI Austria), Institute for Computer Science, University of Innsbruck, Technikerstrasse 21a, A-6020 Innsbruck, Austria

  • Venue:
  • ESWC '07 Proceedings of the 4th European conference on The Semantic Web: Research and Applications
  • Year:
  • 2007

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Abstract

Discovery is a central reasoning task in service-oriented architectures, concerned with detecting Web services that are usable for solving a given request. This paper presents two extensions in continuation of previous works towards goal-based Web service discovery with sophisticated semantic matchmaking. At first, we distinguish goal templates as generic objective descriptions and goal instances that denote concrete requests as an instantiation of a goal template. Secondly, we formally describe requested and provided functionalities on the level of state transitions that denote executions of Web services, respectively solutions for goals. Upon this, we specify a two-phase discovery procedure along with semantic matchmaking techniques that allow to accurately determine the usability of a Web service. The techniques are defined in the Abstract State Space model that supports several languages for describing Web services.