In Group Decision Making problems experts have to provide their preferences about some alternatives to solve a particular problem. Fuzzy Preference Relations are a very widely preference representation format that experts can use to express their opinions about the alternatives. But due to their own personal background and abilities experts are not often capable of provide complete and consiste...

This study examines how forensic evaluators' opinions that pertain to diagnosis, competency to stand trial, and criminal responsibility (Maryland's version of the not guilty by reason of insanity plea) are rendered at a state forensic hospital for defendants pleading not criminally responsible. Pretrial evaluations completed independently by a psychiatrist, a psychologist, and a social worker w...

We summarize some of our recent work on using AI to improve group decision-making by taking a unified approach from statistics, economics, and computation. We then discuss a few ongoing and future directions.

Discriminant analysis is a classification method that can predict the group membership of a newly sampled observation. In discriminant analysis, classification of new observed data has an uncertainty. In this paper, the confidence degree is introduced to determine the confidence of classification of new observed data. Then, a Monte Carlo-based sensitivity analysis is applied to an assessment of...

In this paper we introduce a multi-stage decision making procedure where decision makers sort the alternatives by means of a fixed set of linguistic categories, each one has associated a numerical score. First we average the scores obtained by each alternative and we consider the associated collective preference. Then, we obtain a distance between each individual preference and the collective o...

Decision processes for solving group decision making problems are composed of two phases: (i) aggregation and, (ii) exploitation. When experts that participate in the group decision making process are not able to express their opinions using a same expression domain, then the use of information assessed in different domains, i.e., heterogeneous information, is necessary. In these cases, the inf...

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