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Published in: Group Decision and Negotiation 6/2019

05-11-2019

DSmT-Based Group DEMATEL Method with Reaching Consensus

Authors: Yuan-Wei Du, Wen Zhou

Published in: Group Decision and Negotiation | Issue 6/2019

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Abstract

The decision-making trial and evaluation laboratory (DEMATEL) method employs expert assessments expressed by crisp values to construct a group initial direct-relation (IDR) matrix. However, it tends to be a low-precision expression, especially in complex practical problems. Although significant efforts have been made to improve the DEMATEL method, these improvements tend to neglect individual characteristics and group consensus, resulting in unconvincing decision results. This study provides a Dezert–Smarandache theory-based group DEMATEL method with reaching consensus. In order to reasonably determine the group IDR matrix, basic belief assignment function is employed to extract expert assessments and the proportional conflict redistribution rule no.5 of DSmT is employed to make fusion to derive the temporary group IDR matrix. Moreover, the consensus measures at both expert level and pair-factors level are calculated to determine whether the acceptable consensus level has been reached or not. If the required consensus level is not reached, a feedback mechanism will be activated to help experts reach a consensus. A consensus group IDR matrix for the group DEMATEL can be obtained with the help of feedback mechanism, based on which an algorithm is summarized for the proposed method to identify major factors in a complex system. Finally, numerical comparison and discussion are introduced to verify the effectiveness and applicability of the proposed method and algorithm.

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Metadata
Title
DSmT-Based Group DEMATEL Method with Reaching Consensus
Authors
Yuan-Wei Du
Wen Zhou
Publication date
05-11-2019
Publisher
Springer Netherlands
Published in
Group Decision and Negotiation / Issue 6/2019
Print ISSN: 0926-2644
Electronic ISSN: 1572-9907
DOI
https://doi.org/10.1007/s10726-019-09641-6

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