基于领域本体的可信服务组合

针对现有Web服务组合方法缺乏对服务自身属性信任问题的深入考虑,服务组合过程可信需求无法得到保障,提出了一种基于领域本体的可信Web服务组合方法。将服务的非功能属性分为服务质量、服务信任和服务上下文三个主要方面,并采用本体构建工具Protégé构建原子服务本体,利用推理机FaCT++对原始服务集进行本体推理过滤;引入了融合本体推理过滤的Web服务架构;提出了基于层次任务网络(hierarchical tasknetwork,HTN)规划法的可信服务组合算法。仿真实验表明:与传统的组合方法相比,该方法可有效提高服务组合的效率和成功率。

Trustworthy Web services composition based on domain ontology

Most current Web services composition models do not take trust into great consideration. The process of service composition can not guarantee the requirements of trustworthiness. To address this problem, this paper proposed a trustworthy Web services composition method based on domain ontology. Three main components including quality of service QoS, trust of service and context composed non-functional properties of service. Protégé ontology editor built atomic service ontology and an inference engine FaCT++ helped filter original Web services. After presenting ontology inference filter-integrated service architecture, this paper introduced a trustworthy services composition algorithm based on Hierarchical Task Network HTN planning. Simulation experiments show that compared with traditional methods, the proposed method can effectively improve both the efficiency and success rate of service composition.