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Modelling experts’ attitudes in group decision making

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Abstract

Nowadays, important decisions that have a significant impact either in societies or in organizations are commonly made by a group rather than a single decision maker, which might require more than a majority rule to obtain a real acceptance. Consensus-reaching processes provide a way to drive group decisions which are more accepted and appreciated by people affected by such a decision. These processes care about different consensus measures to determine the agreement in the group. The correct choice of a consensus measure that reflects the attitude of decision makers is a key issue for improving and optimizing consensus-reaching processes, which still requires further research. This paper studies the concept of group’s attitude towards consensus, and presents a consensus model that integrates it in the measurement of consensus, through an extension of OWA aggregation operators, the so-called Attitude-OWA. The approach is applied to the solution of a real-like group decision making problem with the definition of different attitudes, and the results are analysed.

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Acknowledgments

This work is partially supported by the Research Project TIN-2009-08286, P08-TIC-3548 and FEDER funds.

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Authors and Affiliations

  1. Department of Computer Science, University of Jaén, 23071, Jaén, Spain

    I. Palomares & L. Martínez

  2. School of Computing and Mathematics, University of Ulster, Newtownabbey, BT37 0QB, Northern Ireland, UK

    J. Liu

  3. School of Mathematics, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China

    Y. Xu

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  1. I. Palomares
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  2. J. Liu
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  3. Y. Xu
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  4. L. Martínez
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Correspondence to I. Palomares.

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Palomares, I., Liu, J., Xu, Y. et al. Modelling experts’ attitudes in group decision making. Soft Comput 16, 1755–1766 (2012). https://doi.org/10.1007/s00500-012-0859-8

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