Title: Fuzzy group decision making based on grey relative analysis

Authors: Desheng Wu

Addresses: School of Business, University of Science and Technology of China, Hefei Anhui 230026, P.R. China and Department of Mechanical and Industrial Engineering, University of Toronto, Toronto M5S 3G8, Canada

Abstract: In group decision making settings, it is believed that expert preferences should be represented by fuzzy numbers since they are often expressed subjectively, imprecisely and vaguely. This paper proposes to employ the grey relative analysis to deal with the fuzzy group decision making problem. To aggregate individual opinions into an optimal consensus, this approach integrates grey relative analysis in two steps, one for individual integration and the other for group integration. Trapezoidal fuzzy numbers are utilised to deal with the fuzziness of human judgement.

Keywords: fuzzy numbers; grey relative analysis; group decision making; interval number; multi-criteria decision making; performance measurement.

DOI: 10.1504/IJMDM.2006.010249

International Journal of Management and Decision Making, 2006 Vol.7 No.4, pp.454 - 472

Published online: 11 Jul 2006 *

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