3.1. Introduction
Multi-criteria analysis provides the decision maker tools that allow you to solve decision problems considering
various criteria, which usually are contradictory or not comparable.
The solution of a decision problem is always linked to a set of options or alternatives, of which the decision
maker determines the most feasible considering the multiplicity and heterogeneity of its features or attributes. At the
time that these characteristics or attributes are assigned a minimum of information on the preferences of the decision
maker, they become criteria (Beard, S, Charles J, 1997). A multicriteria decision problem is one in which considered
a range of options and potential alternatives, among which a decision maker must make at least one of the following
(Antun, JP, 1994):