Two-Phase Web Service Discovery Based on Rich Functional Descriptions

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 service. The techniques are defined in the Abstract State Space model that supports several languages for describing Web services.

• Type: Conference
• Year: 2007
• Where: ESWS
• Authors: Michael Stollberg, Uwe Keller, Holger Lausen, Stijn Heymans
• Keywords: ESWS 2007, Semantic Matchmaking, Sophisticated Semantic Matchmaking, Web Services