Selection Mechanism of Composite Web Services Based on Usability

Based on the usability of composite Web services, this paper proposes a service selection solution, which can address the selection problem of composite Web services, especially, when there are concurrent Web services in a composite Web service. To obtain the most suitable Web service, this method utilizes certain rules to sort the examples of Web services found by dynamic adaptive template. With minimum coverage thinking, these rules are used to quantify composite matching satisfactory degree of semantic Web service and non-functional attributes, and define usability of Web services. Based on OWL-S and Microsoft.NET, we use the proposed rules to achieve the matching algorithm in the matching engine running on the prototype system. Experimental results show that our method can real-timely choose the composite Web service including concurrent Web services, get the greater recall rate on the basis of the greater scope, and improve the precision of service selection.