不确定QoS信息下的web服务选择方法研究

摘要

针对web服务选择中存在QoS属性信息不确定性的问题，在分析QoS属性描述的基础上，提出一种不确定QoS信息下的web服务选择方法，该方法分别从区间型和模糊型两方面考虑不确定QoS信息，基于有序加权平均（OWA）算子实现区间型QoS属性的确定化，使用联系数分析和量化web服务的模糊QoS属性，并在此基础上设计不确定QoS下的web服务选择模型。实验结果证实该选择算法的有效性和可行性。%In view of uncertain QoS information problem in web services selection,the web service select method was presented for uncertain QoS information based on the analysis of the QoS attribute description. In the method the uncertain QoS information was considered respectively from the interval type and fuzzy type. Interval type QoS attributes were determined based on the ordered weighted averaging(OWA),and fuzzy QoS attributes were quantified by the connection number,what’s more,the model of web service selection under uncertain QoS information was designed and experimental results showed that new approach was feasible and effective.