一种组合服务的个性化QoS模型  

Personalized QoS Model for Composition Service

作　　者：朱红宁[1] 史绍伟[1] 张斌[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2009年第9期1266-1269,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(60773218)

摘　　要：针对单一化QoS模型没有充分考虑Web服务非功能属性的主观性、业务相对性、相关性以及不确定性的问题,提出组合服务的个性化QoS模型.首先,将基于业务相对性的指标重要度与基于主观性和不确定性的业务关注度合成初始权重向量;其次,对初始权重向量做基于相关性削弱考虑的调整,得到个性化权重向量;最后,生成基于业务功能约束和指标相关性削弱的个性化QoS模型.实例分析表明,它比单一化QoS模型对服务质量的评价更为细腻合理.A personalized QoS model is proposed for composition service to solve the problem that a single QoS model fails to consider fully such non-functional attributes in web service as subjectivity, relativity, dependency and uncertainty. The importance of criteria in view of the relativity of service is combined with the attention paid to service in view of subjectivity and uncertainty so as to form an initial weight vector. Then, the dependency is less considered to adjust the initial weight vector so as to get a personalized weight vector. As a result, the personalized QoS model is developed, on which the service functions are constrained and the dependency between criteria is less considered. The analysis of examples showed that the personalized QoS model thus developed is more reasonable and detailed than the single one through QoS evaluation.

关 键 词：组合服务 QOS模型 个性化 业务功能约束 指标相关性削弱 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]