David Pérez-Román

Learn More
In this chapter we focus our attention in how to measure consensus in groups of voters when they show their preferences over a fixed set of alternatives or candidates by means of weak orders (complete preorders). We have introduced a new class of consensus measures on weak orders based on distances, and we have analyzed some of their properties paying(More)
We consider measuring the degree of homogeneity for preference-approval profiles which include the approval information for the alternatives as well as the rankings of them. A distance-based approach is followed to measure the disagreement for any given two preference-approvals. Under the condition that a proper metric is used, we propose a measure of(More)
Extended Abstract In the field of Social Choice, Bosch [4] introduced the notion of consensus measure as a mapping that assigns a number between 0 and 1 to every profile of linear orders, satisfying three properties: unanimity (in every subgroup of agents, the highest degree of consensus is only reached whenever all individuals have the same ranking),(More)
In this paper, we introduce a flexible consensus reaching process when agents evaluate the alternatives through linguistic expressions formed by a linguistic term, when they are confident on their opinions, or by several consecutive linguistic terms, when they hesitate. Taking into account an appropriate metric on the set of linguistic expressions and an(More)
  • 1