An Optimal Algorithm of Group Decision Making Based on Linguistic Fuzzy Preference Information

The problem of group decision making toward expressing preference relation in linguistic labels in fuzzy decision system, constructs deviation function by transform function , make use of the idea of optimization, builds optimal model, an optimal algorithm of group decision making based on linguistic preference information is proposed, called "least variance method". Calculate simply and manipulate easily are features of this method, and finally, an example is given to show the efficiency and practicality of this method.