Chen et al. (Fuzzy Sets and Systems 67 (1994) (163-172)) present some techn
iques for handling multicriteria fuzzy decision-making problems based on va
gue set theory. They provide some functions to measure the degree of suitab
ility of each alternative with respect to a set of criteria presented by va
gue values. However, in some cases, these functions do not give sufficient
information about alternatives. In this paper, we provide new functions to
measure the degree of accuracy in the grades of membership of each alternat
ive with respect to a set of criteria represented by vague values. The prop
osed functions give additional information about alternatives. The techniqu
es proposed in this paper can provide more useful way than those of Chen to
efficiently help the decision-maker to make his decision. (C) 2000 Elsevie
r Science B.V. All rights reserved.