When all are agreed on the category of criteria, to examine each alternative concordance to the attribute, we presuming that the options are known, it remains to complete the decision matrix. The assessment is generally independent of the aggregation procedure; it was due to the fact that examination theoretical counts on the posterior aggregation operation are generally ignored by the designers. The location of the respective alternatives or transforming a pair wise comparison into a numerical (normalized) scale as, for example, in the so-called “Analytical Hierarchical Process”(AHP) (Saaty, 1980).
The utilities of a prearranged option, in the structure of multi-attribute utility, regarding each attribute, are jointly cardinal. They have therefore to be jointly evaluated (Pomerol & Barba-Romero, 1993). The support of a Multicriteria Decision Making methodology should be very useful in the case considering the difficulty either to validate the probabilistic independence or to aid the decision maker to jointly measure the options by solvability or by the mid-preference point method.