基于两层声誉演化模型的服务组合选取策略  

A service composite selection policy based on two-tier model reputation evolution

作　　者：刘济波[1] 朱培栋[2] 胡春华[1] 刘安丰[3] 

机构地区：[1]湖南商学院计算机与电子工程学院,湖南长沙410205 [2]国防科学技术大学计算机学院,湖南长沙410073 [3]中南大学信息科学与工程学院,湖南长沙410205

出　　处：《中南大学学报（自然科学版）》2009年第3期756-762,共7页Journal of Central South University:Science and Technology

基　　金：中国博士后科研基金资助项目(20080440988);湖南省自然科学基金资助项目(09JJ4030)

摘　　要：针对当前服务组合往往将服务提供者与用户都看成是可信的,导致服务组合质量不高,而实际互联网络中服务组合的各参与方都有虚假、恶意的可能,这些低声誉度的实体对服务组合严重影响服务组合的质量等问题,提出一种基于两层声誉演化模型来刻画组合实体间的信誉演化关系。该模型首先通过服务组合交互双方向系统提交的rating建立公众声誉系统,然后,通过主体间的直接或者间接交互来形成直观的声誉评价体系;在此基础上,提出支持声誉演化的服务组合选取方法。实验与理论分析结果表明,该方法能较好地抑制恶意实体干扰,减弱低质量服务的影响,具有良好的适用性。The current services composition system tends to treat service providers and users as credible, making the QoS of services composition not high, because there are a mass of malicious, camouflage, false untrue services on the internet, and these low-degree reputation entity seriously affects QoS of services composition. Thus a reputation based on the evolution of a two-tier model was proposed to describe the credibility composition of evolution of inter-entity relations. A public reputation rating system was built through interactive services composition submitted by the parties to the system, the reputation of intuitive evaluation system was formed through the main direct or indirect interaction. On this basis, services composition selection algorithm was proposed, which supported the reputation of the evolution model. Experiments and theoretical analysis results show that the evolution of the model can inhibit malicious entity interference, and reduce low-quality services with good applicability.

关 键 词：WEB服务组合 信誉演化 服务选取 服务质量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]