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针对服务组合流程,提出了语义与QoS全局感知的服务组合.在全局语义匹配过程中,既考虑了全局匹配,又考虑了从QoS角度进行匹配.当对服务组合有全局语义满足及QoS约束要求时,在全局范围里选择满足整个服务组合流程的QoS约束和语义匹配度要求的具体服务集,并实现服务组合的优化解.建立了全局匹配的QoS模型及其评价方法,基于该模型及评价方法,采用遗传算法实现全局语义匹配度最大化及满足用户的QoS指标需求.实验结果和分析表明,基于语义与QoS感知的服务匹配算法是可行和有效的.
Aiming at the service composition process, a service combination of semantic and QoS global awareness is proposed. In the process of global semantic matching, both global matching and QoS matching are considered.When there are global semantic satisfactions and QoS constraints on service composition , We select the specific service set that satisfies the QoS constraints and semantic matching requirements of the entire service composition process globally and implement the optimal solution of the service composition.We establish a global matching QoS model and its evaluation method.According to the model and evaluation Method, the genetic algorithm is used to maximize the global semantic matching and satisfy the users’ QoS requirements.Experimental results and analysis show that the service matching algorithm based on semantic and QoS perception is feasible and effective.