Method of web services selection in two phases based on QoS
Jing Liu · Jisuanji gongcheng yu sheji · 2009
Existing methods of services selection are analyzed and their shortcomings are pointed out. According to characteristics of service selection based on QoS, combination of both QoS attributes calculation methods and QoS semantic approach to select services is adopted. By functional classification, services similarity comparison, QoS ranking and selection, lots of web services and reduce the computation amount of overall algorithm is removed. Furthermore, the overall service selection adopt the shortest path algorithm to overcome the shortcomings which the local optimization not consider the overall QoS constraints. Achieved the purpose of satisfying local service constraints and overall service constraints, the users obtain the relatively optimal services. Finally verifying proposed method by examples.