A mathematical model for QoS based composite web service design

초록

Service Oriented Architecture (SOA) is becoming a major software framework for heterogeneous applications for e-business. Web service technologies enable networked organizations to integrate operations and to automate collaborative business processes. Using standard protocols such as WSDL, SOAP, etc., distributed applications are developed as an independent single web service and easily invoked by anyone who needs their functionality. Combining these with certain criteria, users can make a complex business process, i.e. a composite web services. Recently, many researchers have proposed web service selection methodologies for efficient service composition. Most of them assume that composition topology, i.e. logical flow is fixed. In this paper, we propose a composite web service design model in the situation that there is no predefined logical flow for composition and presents a mathematical model and a solving heuristic for it.