A System Framework for Web Service Semantic and Automatic Orchestration

In this paper, we present the framework of semantic and automatic service orchestration (SASO) system for Web services modeling and composition. The SASO system has the following features: 1) it adopts a semantic approach to model Web services, and 2) it supports a Web service selection policy based on user preferences. First, we express services in their semantics so that relations among the services can be identified through ontology modeling, which is to be accomplished in two steps: input/output parameter modeling and Web service modeling. Then, we provide an algorithm for automatic service composition with a selection policy that addresses user priority. This relieves users from the tasks of manually browsing, monitoring, and composing Web services. Furthermore, SASO supports fuzzy composition of Web services when exact Web services cannot be found. In SASO, composition plans are represented by graphs that can be interactively modified. These graphs are compiled into executable code to carry out the composite service. Our empirical results demonstrate that SASO not only finds the appropriate services for composition but also the best plan to execute them.

[1]  Jerry R. Hobbs,et al.  DAML-S: Web Service Description for the Semantic Web , 2002, SEMWEB.

[2]  Natalya F. Noy,et al.  The state of art in ontology design , 1997 .

[3]  Ning Gu,et al.  Composing Web services dynamically and semantically , 2004, IEEE International Conference on E-Commerce Technology for Dynamic E-Business.

[4]  Quan Z. Sheng,et al.  The Self-Serv Environment for Web Services Composition , 2003, IEEE Internet Comput..

[5]  Anne H. H. Ngu,et al.  Declarative composition and peer-to-peer provisioning of dynamic Web services , 2002, Proceedings 18th International Conference on Data Engineering.

[6]  Ning Gu,et al.  An ontology modeling method in semantic composition of Web services , 2004, IEEE International Conference on E-Commerce Technology for Dynamic E-Business.

[7]  Valérie Issarny,et al.  Dependability in the Web Services Architecture , 2002, WADS.

[8]  George A. Miller,et al.  Introduction to WordNet: An On-line Lexical Database , 1990 .

[9]  Kwang Mong Sim,et al.  Toward agency and ontology for web-based information retrieval , 2004, IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews).

[10]  Yiwen Zhu,et al.  An Algorithm for Best Selection in Semantic Composition of Web Service , 2005, WAIM.

[11]  Dieter Pfoser.  Indexing the Trajectories of Moving Objects , 2002 .

[12]  Tony Andrews.  Business Process Execution Language for Web Services Version 1.1 , 2003 .

[13]  Ismailcem Budak Arpinar,et al.  Automatic Composition of Semantic Web Services , 2003, ICWS.

[14]  A. Romanovsky,et al.  Dependability in the Web Service Architecture , 2002 .