Non deterministic fuzzy classification systems

A wide research area in mathematics is devoted to the formalization what they call Decision Making, either from a descriptive or a prescraptive point of view. This is justified because individual decisions appears sometimes as the only objective information we get about people, and one can argue that individ- ual decisions are the essential human fact. A human being is viewed just as a decision maker. We should realize that a portion of the Decision Making researchers have a particular view about what a decision is. Decision Making in a Bayesian context