基于多属性群决策服务组合方案选取方法

针对如何快速、准确地得出最符合用户偏好的服务组合方案的问题,提出一种基于多属性群决策理论的服务组合方案选取方法。该方法根据匹配规则计算子服务QoS属性与用户偏好的相似度,进而依据相似度选取子服务进行组合,在多个服务组合方案选取中,将用户各偏好视做决策者,利用多属性群决策理论对所有方案进行优劣排序,从而选取最优组合方案。实验结果表明,该方法所得解方案相对较优,消耗时间较合理,进一步证明了该方法的有效性和可行性。

Approach on selecting composition schema based on multi-attributegroup decision

For quickly searching out service composition schema matching user’s preferences as good as possible,in all service composition meeting requirements of users,this paper proposed an approach of selecting service composition schema based on multi-attribute group decision theory.First,calculated distance between sub-service and user’s preference with matching rules,and then,selected service to combine in a sequence,subsequently,produced set of service compositions.In the approach,user’s multi-preference regard as decision maker,consequently,all the service compositions could be sorted by multi-attribute group decision theory,consequently,obtained the best service composition.Experiment results show that this method can work out good solution with less running time,and confirm the feasibility and validity of the method.