Dynamic web service selection group decision-making method based on hybrid QoS. (1st January 2013)

• Record Type: Journal Article
• Authors: Zhang, Longchang; Yang, Yanhong
• Is Part Of: International journal of high performance computing and networking. Volume 7:Number 3(2013)
• Page Start: 215
• Page End: 226
• Publication Date: 2013-01-01
• Subjects: service composition -- QoS -- multiple decision-makers -- group decision-making -- web service; High performance computing -- Periodicals; Computer networks -- Periodicals; High performance computing; Periodicals; 004.05
• Languages: English
• ISSNs: 1740-0562

Abstract

Open and dynamic internet environment, multi-period QoS and multiple QoS registry centres increased the difficulty of service selection. To solve difficulties above, a hybrid QoS model is introduced supporting real numbers, interval numbers, triangular fuzzy numbers and intuitionistic fuzzy numbers and multi-period hybrid QoS aggregating operator firstly. Furthermore, dynamic web service selection group decision-making method based on hybrid QoS (DWSSGDM_HQ) is presented to support proposed models of QoS, multiple QoS registry centres. DWSSGDM_HQ includes four main steps: converting hybrid QoS into intervals, calculating weighted normalised decision-matrix, determining the group positive-ideal and group negative-ideal solution, and calculating the close-degrees of candidates. Finally, some experiments are given using actual QoS data to demonstrate the benefits and effectiveness of our approach.