Group decision-making is a crucial activity, necessary in many aspects of our civilization. In
many cases, due to inherent complexity, experts cannot express their opinion or preferences …

To solve group decision-making problems we have to take in account different aspects. On
the one hand, depending on the problem, we can deal with different types of information. In …

Group decision making (GDM) can be defined as an environment where there exist a set of
possible alternatives and a set of individuals (experts, judgements, etc.). Preference relation …

The group decision making (GDM) can be seen as a task to find a collective solution to a
decision problem in the situations where a group of experts express their opinions regarding …

A consensus reaching process is an iteratively developed negotiation process designed to
ensure that a mutual agreement is reached by decision makers. To incorporate distribution …

The main challenges in large scale group decision making (LSGDM) problem are how to
tackle with the great number of participants and how to achieve a common solution accepted …

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 …

Nowadays due to the social networks and the technological development, large-scale group
decision making (LS-GDM) problems are fairly common and decisions that may affect to lots …

The generation of collective preference assessments occupies a critical position in deriving
accurate and reliable alternative rankings in the context of large-scale group decision …

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 …