Multi-Level based Framework for Organizing and Composing Semantic Web Services

Web service composition has quickly become a key area of research in the service oriented architecture community. It is originated from the necessity to combine existing services to achieve a predetermined goal that cannot be realized by a standalone service. Semantic service description is widely recognized that is a key element for the dynamic composition of Web services, since it allows the unambiguous descriptions of a service's capabilities and parameters [7]. This paper introduces a framework for performing dynamic service composition based on three level of semantic description and organization of web services. Thus, we present three main phases to generate composite service from high-level declarative Query. Two level granularities of composition plan could be generated (abstract and concrete) using our approach. This will reuse plans already constructed to meet similar needs even with modified preferences. The core of our proposed composition process is the matchmaking algorithm extended from that of [13].