Two processes are necessary to solve group decision making problems: A consensus
process and a selection process. The consensus reaching process is necessary to obtain a …

In decision-making problems there may be cases in which experts do not have an in-depth
knowledge of the problem to be solved. In such cases, experts may not put their opinion …

Consensus is defined as a cooperative process in which a group of decision makers
develops and agrees to support a decision in the best interest of the whole. It is a …

This paper presents a new method to coping with group decision making with incomplete
fuzzy preference information. To do this, it first defines an additively consistent index of fuzzy …

Sometimes, we find decision situations in which it is difficult to express some preferences by
means of concrete preference degrees. In this paper, we present a consensus model for …

In many group decision-making situations, decision makers' preferences for alternatives are
expressed in preference relations (including fuzzy preference relations and multiplicative …

Incomplete preferences have become increasingly common in light of the redundancy of
information and time-related pressures. Incomplete fuzzy preference relations (IFPRs) have …

The consistency measure is a vital basis for group decision making (GDM) based on fuzzy
preference relations, and includes two subproblems: individual consistency and consensus …

Reaching a high level of consensus among experts is critical in group decision making
problems. Usually, it is the moderator task to assure that the consensus process is carried …

In this paper, we present a new method for group decision making with incomplete fuzzy
preference relations based on the additive consistency and the order consistency. We …