摘要
如何动态地把现存的各种Web服务整合起来以形成新的、满足不同用户需求的服务已成为新的应用需求和研究热点.针对现有服务合成中服务选择技术的不足,提出了一种基于着色Petri网的最小代价服务合成方法。该方法主要思想是根据候选服务输入输出之间的逻辑关系建立有色Petri网,从而找出所有合成方案,然后根据原子服务的服务质量(quality of service,QOS)参数选择具有最小代价的合成方案,通过服务实例验证,基于着色Petri网服务合成方法能够获得最小代价的组合方式。
Recently,people intend to integrate the existent Web services to form a new service that can meet the needs of different users.How to do it dynamically is a hot research area.An optimal web service composition algorithm based on colored petri-nets is proposed.The essence of the algorithm is that of ours,on the basis of the input and output logical relation of candidate Web services,the colored petri-nets is constructed in order to find all the integration methods.From those methods,the optimal one is selected by using the QoS attributes of the Proto Web service.The effectiveness of the algorithm based on colored petri nets is verified by an example.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2010年第2期415-418,共4页
Systems Engineering and Electronics
基金
陕西省科学技术研究发展计划项目(2008K04-14)
西安市科技创新计划(YF07012)资助课题
