关键词: 服务框架, 服务质量, 匹配, 最优化

Abstract: Web service conducts the research only based on key words matching and this method cant accurately describe the services according to the users requirements. Thus, it is difficult to ensure the already-found services to be optimal. In order to deal with this problem, model of semantic，Web service framework was proposed. Firstly the requests from users were represented as Service Template (ST) in forms of constraint by adding enriched semantic description to Web services. After that based on service domain, data semantics and functional semantics, similarity matching between ST and Service Advertisements (SA) was conducted so as to form a set of candidate services. Finally, an optimal service could be found in this set according to users constraints (represented with QoS semantics). Our experiments have proved that this model could greatly improve the precision and efficiency of Web services. At the same time, it has upgraded the problem from whether suitable services could be found to how to select an optimal one.

Key words: services framework, quality of service, matching, optimization