针对基于服务一级粗粒度的语义Web服务组合方法无法有效地发现满足用户需求的潜在的服务组合,导致组合成功率低的问题,提出了基于语义Web服务内部流程接口匹配的自动服务组合方法.该方法利用基于语义的Web服务描述语言(OWL-S)并在领域本体的支持下对Web服务语义进行描述,对服务与服务流程进行区分,将服务流程作为组合操作对象,通过计算不同的Web服务内部流程接口之间语义关联程度,遵从后继服务流程选择策略自动地生成能够满足用户需求的流程组合方案,并通过反向检索组合流程,消除组合方案中冗余的服务流程.通过一系列的仿真实验对该组合方法的成功率、效率等方面进行了验证,结果证明了该方法可以更加有效地根据用户请求自动生成服务组合方案.%This study proposed an automated semantic Web service composition method based on the interface matching of service processes. The proposed method distinguishes service processes with services in order to obtain the potential service composition. By computing the relevancy of different process interfaces and following the selection strategy of succeed service processes, the method can automatically generate user-oriented combined processes using the OWL-S to describe the semantic of Web service according to ontology. It can eliminate the redundant processes as well by examining the combined processes reversely, resulting in the final combined services. The efficiency and the accuracy of the method were tested with a series of simulated experiments, and the experimental result showed its feasibility.
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