一种基于范例的自动Web服务组合方法

A Case-Based Automatic Composition Method of Semantic Web Service

在面向服务的环境下,为快速、高效地进行自动Web服务组合,定义了范例并集的概念,明确了当多个范例合并时才可满足服务请求的情况,简化了范例检索过程,使得在整个组合过程中只需要检索一次范例库。然后提出了一种基于范例的服务组合方法,对检索到的范例按相似度降序排列,在排名靠前的范例中选择范例实施调整,其中若有单个范例满足请求则删除该范例中的冗余服务,否则进行范例合并,最后复用调整后的范例实现服务组合。仿真实例说明了本方法的可行性和有效性。

Under the service-oriented environment,in order to carry out automatic Web service composition fast and efficiently,defined the concept of case union set,clarified the situation of satisfying request when several case were united,and made us retrieving case base only once in the entire process of composition.Then a method of case-based service composition is provided in this thesis,which lines the returned cases according to the degree of similarity in descending order,select one to carry out case adjustment with regard to those ranking-front by deleting redundant services of single case or combining them,and finally reuses the adjusted case to support Web services composition.Simulation instances have showed the feasibility and effectiveness of the proposed method.