Decision support has been treated for a long time in a unidecidor setting. Group decision plays a vital role in any society. Many methods of solving a multicriteria problem involving several decision-makers exist in the literature. This resolution is usually done through a mathematical formula called aggregation function that allows aggregating individual preferences into a collective preference. But most often we encounter difficult methods in implementation leaving very little choice to decision makers. In this work, we used a voting method based on a distance to solve a group decision problem. The numerical results obtained show that our approach is able to provide very competitive results compared to Electre I method.

voting method, multicriteria-multi-factor, metric procedures, group decision.