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    Granulating linguistic information in decision making under consensus and consistency

    Autor: 
    Cabrerizo, Francisco Javier
    ;
    Morente-Molinera, Juan Antonio
    ;
    Pedrycz, Witold
    ;
    Taghavi, Atefe
    ;
    Herrera-Viedma, Enrique
    Fecha: 
    01/07/2018
    Palabra clave: 
    group decision making; granulation; linguistic information; consistency; consensus; JCR; Scopus
    Revista / editorial: 
    Expert Systems with Applications
    Tipo de Ítem: 
    Articulo Revista Indexada
    URI: 
    https://reunir.unir.net/handle/123456789/6631
    DOI: 
    https://doi.org/10.1016/j.eswa.2018.01.030
    Dirección web: 
    https://www.sciencedirect.com/science/article/pii/S0957417418300368
    Resumen:
    This study is concerned with group decision making contexts in which linguistic preference relations are used to provide the evaluations of results. On the one hand, granulation of linguistic terms, which are used as entries of the preference relations, is carried out for the purpose of dealing with the linguistic information. Formally, the problem is expressed as a multi-objective optimization task in which a performance index composed of the weighted averaging of the criteria of consensus and consistency is maximized via an appropriate association of the linguistic terms with information granules formed as intervals. On the other hand, once the linguistic terms are made operational by mapping them to the corresponding intervals, a selection process, in which the consistency achieved by each agent is also considered, is employed with intent to construct the solution to the decision problem under consideration. An experimental study is reported by demonstrating the main features of the proposed approach. Furthermore, some drawbacks and advantages are also analyzed.
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