改进了一种基于服务质量(quality of service,QoS)可信性的Web服务选择方法.根据质量属性的类别,在第二类质量属性中引入惩罚因子和时间参数,不仅加快此类属性评估向真实值收敛的速度,而且还对发布虚假属性值的服务提供者进行了惩罚;在第三类质量属性中引入服务价格参数,降低了服务请求者遭遇团队欺骗的风险.结果表明改进后的方法能有效地提高QoS评估的可信性. An improved Web service selection method based on the quality of service (QoS) trustworthiness is proposed.According to the category of quality attributes, the introduction of penalty factor and time parameter into the second type of quality attribute not only speeds up the evaluation of such attributes The true value of the convergence rate, but also for the distribution of false attribute value of the service provider was punished; the introduction of the third type of quality attributes in the service price parameters, reducing the risk of service requesters team cheating.The results show that the improved method Can effectively improve the credibility of QoS assessment.