关键词: 服务组合, 服务聚类, 语义, 组合模板, 即时性

Abstract: To enable service composition just-in-time and adaptive to the heterogeneous Web services and the variability of business requirements, a service composition approach to the variability of business requirements was proposed. Measures to supply stable cooperation relations of Web services were presented, and rules to service clustering based on the compatibility of Web services were verified. Based on such rules, the approach and algorithm to service composition based on the relative graph of aggregated Web services were also given out. The experiments show the approach can improve the efficiency of service composition comparative to routine approaches, and eventually make service composition more just-in-time and adaptive in user-steering problem solving environments.

Key words: service composition, service clustering, semantics, composition template, just-in-time