Group decision-making with evaluations by comparative linguistic expressions

Nguyen Tien Duy, Ta Thanh Nam, Pham Dang Tu


To solve the group decision-making (GDM) problem with evaluations by comparative linguistic expressions, in this paper, we propose a new computation algorithm that uses the index of the set of linguistic terms built in available. Under this approach, we can easily aggregation the indexes of
linguistic terms. The algorithm is strict in logic and simple in implementation because it always ensures the order of linguistic terms. We have applied the
proposed algorithm on a specific application that is to make the group decide from the reviewers to choose the highest rated book. The calculation results showed the correctness and efficiency of the algorithm.

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