Consensus-based decision support for multicriteria group decision making

• Published in: Computers & industrial engineering Vol. 66; no. 4; pp. 625 - 633
• Main Authors: Wibowo, Santoso, Deng, Hepu
• Format: Journal Article
• Language: English
• Published: New York Elsevier Ltd 01.12.2013; Pergamon Press Inc
• Subjects: Algorithms; Consensus building; Decision making; Decision making models; Decision support systems; Effectiveness studies; Fuzzy sets; Group decision making; Hierarchies; Mathematical problems; Multicriteria analysis; Multiple criteria decision making; Uncertainty modeling; Group decision making; Consensus building; Multicriteria analysis; Uncertainty modeling
• ISSN: 0360-8352; 1879-0550
• DOI: 10.1016/j.cie.2013.09.015

•A consensus-based approach for multicriteria group decision making is developed.•The effective modeling of subjectiveness and imprecision.•The proposition of a decision support system framework.•The presentation of an example. Consensus decision making is complex and challenging in multicriteria group decision making due to the involvement of several decision makers, the presence of multiple, and often conflicting criteria, and the existence of subjectiveness and imprecision in the decision making process. To ensure effective decisions being made, the interest of all the decision makers usually represented by the degree of consensus in the decision making process has to be adequately considered. This paper presents a consensus-based approach for effectively solving the multicriteria group decision making problem. The subjectiveness and imprecision of the decision making process is adequately handled by using intuitionistic fuzzy numbers. An interactive algorithm is developed for consensus building in the group decision making process. A decision support system framework is presented for improving the effectiveness of the consensus building process. An example is presented for demonstrating the applicability of the proposed approach for solving the multicriteria group decision making problem in real world situations.