Analytical modeling applied to negotiation and group decision

Trying to reach a consensus in a negotiation or decision process can be a very complex problem involving multiple agents, different criteria, alternatives, conflicting points of view and pressure groups, etc. In this context uncertainty and risk are quite often present. Tools for imprecision analysis and group decision aiding or negotiation can be thus used in order to facilitate achieving a compromise. This article, after a summary review, shows how to use some methodologies in order to minimize conflicts and negotiation time trying to achieve a consensus.