Towards a Web Services Selective Optimizing

Web service composition has been recognized as a flexible way for resource sharing and application integration. As the number of functional similar Web services increases, how to select Web services that can best meet the requirements of the consumers becomes an ongoing research direction in Web service community. Quality of Service (QoS) is the main factor to differentiate them. It is imperative to provide service consumers with facilities for selecting the only web services for their requirement according to their non-functional characteristics or QoS. All required component services need to be constructed into an optimizing solution to the business processes. This paper presents a key business process model of web services, gives five basic formal business processes aggregating these QoS effects, further suggests a framework of web services optimal selection, and proposes a kind of key business process performance model (KBPP), which describe the key performance of business with specific features, and various parameters using dynamic decision of key business process performances. And this novel optimizing model indicates the principle of monitoring these metrics which are represented the application parameters of business processes.