节点文献
一种支持Web服务QoS动态预测的方法
Approach for web service QoS dynamic prediction
【摘要】 为了在高度动态环境下准确地预测Web服务的服务质量(Quality of service,QoS),该文提出了一种基于半马尔可夫过程(Semi-Markov processes,SMP)和事例推理(Case-based reasoning,CBR)的QoS动态预测方法。该方法首先使用SMP预测Web服务在未来被调用时刻的忙闲状态,在此基础上,利用CBR技术预测Web服务处理具体任务时的QoS。实验结果表明:该预测方法能够大幅度提高Web服务QoS的准确度。研究结果为客观评价和成功选择Web服务提供了可靠的依据。
【Abstract】 In order to accurately predict the web service Quality of Service(QoS)in a highly dynamic environment,this paper proposes a Qos dynamic prediction method based on semi-Markov processes(SMP)and case-based reasoning(CBR).This method firstly uses SMP to predict business state of web service in the future,and applies the technology of CBR to predict web service QoS such as a specific task.Experimental results show that this prediction method can improve the accuracy of web service QoS greatly.The results provide a reliable basis for the objective evaluation and successful web service composition.
【Key words】 web service; quality of service; dynamic prediction; semi-Markov processes; case-based reasoning;
- 【文献出处】 南京理工大学学报 ,Journal of Nanjing University of Science and Technology , 编辑部邮箱 ,2013年01期
- 【分类号】TP393.09
- 【被引频次】7
- 【下载频次】203