一种支持服务关联的Web服务选择方法

Method support correlation-service with Web service selection

目前存在的大多数基于QoS(quality of service)的Web服务选择方案都忽略了服务之间的关联关系,认为服务之间是相互独立的,使得组合服务的结果与实际有所偏差。为了提高组合Web服务QoS的精确性,考虑到服务之间的关联关系对组合服务质量的影响,分别对服务之间的接口关联、业务关联和统计关联三种关联关系进行研究,提出了一种基于关联度的关联服务集合发现方法,将支持服务关联的选择问题转换为混合整数规划模型进行求解。实验结果表明,考虑服务之间的关联关系会提高组合Web服务的质量。

At present, most of the Web service selection schemes based on QoS ignore the relationship between services and consider they are independent of each other, making the composite result deviation from the actual. In order to improve the accuracy of composite Web service, this paper considered the relationship between services impact on the composite Web service QoS, and studied of interface correlation, business correlation and statistic correlation three kinds of relationships between the services. This paper proposed a discovery method of the correlation-service set which based on correlation degree, transforming the correlation service selection problem into a mixed integer programming model. The experimental results show that considering the relationship between services will improve the quality of the composite Web services.