Web Service QoS Prediction Approach

Abstract

服务消费者在选择服务之前,通常需要基于其他消费者的经验对未使用过的服务的质量进行预测.考虑到不同服务消费者对同一服务的服务质量的感受之间可能存在较大的差别,提出了一种QoS(quality of service)预测方法.该方法以消费者的历史经验为基础,计算消费者之间以及服务之间的相似程度,并以此相似度为基础对消费者并未使用过的服务的QoS进行预测.实验结果表明,这种方法可以显著提高Web服务质量预测的准确性.;Consumers need to make prediction on the quality of unused Web services before selecting. Usually, this prediction is made based on other consumers’ experiences. Being aware of different QoS (quality of service) experiences of consumers, this paper proposes a QoS prediction approach. This approach makes similarity mining among consumers and QoS data, and then predicts the QoS of the unused Web services from other consumers’ experiences. Experimental results show that with this approach the preciseness of QoS prediction for Web services can be improved significantly.