Towards Context-Aware Composition of Web Services

Service composition is regarded as a primary approach to build an application in service-oriented computing (SOC). Current approaches for service composition may return back lots of invalid results because they neither take user´s context into account nor lack effective verification mechanism. To tackle these problems, this paper presents a framework that enables context-aware composition of Web services. The framework performs capability matches and composes service flow based on goal-driven. Then, it filters out unsuitable compositions of matched services according to available context information. Furthermore, we model the composite service with Petri nets and validate its correctness. And a corresponding algorithm is introduced. Software agents are developed in the framework to effectively support context-aware requirements for applications in SOC