Uncertain QoS Aware Web Service Selection Method Using Prospect Theory
YAN Hua1,FU Xiao-dong(1,2),YUE Kun3,LIU Li1,LIU Li-jun1
1(Yunnan Provincial Key Laboratory of Computer Technology Application,Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China)2(Faculty of Aeronautics,Kunming University of Science and Technology,Kunming 650500,China)3(School of Information Science and Engineering,Yunnan University,Kunming 650091,China)
Abstract：Under the condition of uncertain QoS,in order to make the results of Web service selection satisfy the user's QoS attribute requirement and the risk attitude of selecting service,this paper proposes an uncertain QoS aware Web service selection method based on the prospect theory.First,the requirement of user is selected as the reference point for QoS attribute requirements,and the risky gain matrix and risky loss matrix are constructed by calculating the gasses and losses for the QoS attribute values relative to the reference points.Then,the empirical distribution function is used to describe the uncertainty of Web service QoS attribute.Finally,considering the user's risk attitude,according to the risky matrix and the distribution probability of QoS attribute,the comprehensive prospect values of the candidate services are calculated by using the value function and the probability weight function in the prospect theory,and these values are selected and sorted.The selection results satisfy users' needs and risk attitudes,so that the selection results can satisfy users' expectations to the greatest extent.The rationality and effectiveness of the service selection method are verified by experiments.
严华,付晓东(,),岳昆,刘骊,刘利军. 利用前景理论的不确定QoS感知Web服务选择[J]. 小型微型计算机系统, 2019, 40(5): 953-958.
YAN Hua,FU Xiao-dong(,),YUE Kun,LIU Li,LIU Li-jun. Uncertain QoS Aware Web Service Selection Method Using Prospect Theory. Journal of Chinese Computer Systems, 2019, 40(5): 953-958.
2019, Vol. 40 
