Abstract: In this paper some approaches are used to improve the multiple attribute decision making method. Firstly,direct and feasible interval hesitate fuzzy numbers are converted into intuitionistic fuzzy numbers,and overlapping intervals are employed to reduce numbers of attribute value elements,then the weights of attributes are determined by optimization,and finally,the mechanism of interval hesitate numbers and the applicability of real problems are taking into account to give evaluation on a regional enterprise.

Key words:

Interval fuzzy number, Multiple attribute decision making, Overlapping interval, Intuitionistic fuzzy number, Regional enterprise evaluation