基于直觉模糊理论的混合多属性Web服务选择

针对多个功能相同或相似的服务,提出了基于直觉模糊理论的混合多属性Web服务选择.将QoS属性分为精确数值型、区间数值型和语言型,并利用层次分析法给出了用户QoS偏好的计算方法.引入直觉模糊集理论将混合型QoS属性统一为直觉模糊数,采用直觉模糊加权算术平均算子对QoS决策矩阵各指标集结,利用直觉模糊得分函数对各决策方案进行排序,实现了基于QoS的Web服务选择.实例验证结果表明,该方法具有一定的有效性.

Hybrid multi-attribute Web service selection based on intuitionistic fuzzy theory

Aiming at the multiple services with the same or similar function, a hybrid multi attribute Web service selection based on intuitionistic fuzzy theory was proposed. The QoS attributes were divided into the exact numeric type, interval numeric type and linguistic type. The calculation method for the QoS preference of users was obtained with the analytic hierarchy process （AHP）. In addition, the intuitionistic fuzzy set （IFS） theory was introduced to unify the hybrid QoS attributes into the intuitionistic fuzzy number, and the intuitionistic fuzzy weighted arithmetic average operator was used to assemble the indexes of QoS decision matrix. Moreover, the ranking for each decision scheme was performed with the intuitionistic fuzzy scoring function, and the Web service selection based on QoS was realized. The results of example verification show that the proposed method has certain effectiveness.