Traditionally, the Evolutionary Computation (EC) techniques,
and more specifically the Genetic Algorithms
(GAs) (Goldberg & Wang, 1989), have proved to be
efficient when solving various problems; however, as a
possible lack, the GAs tend to provide a unique solution
for the problem on which they are applied. Some non
global solutions discarded during the search of the best
one could be acceptable under certain circumstances.
The majority of the problems at the real world involve
a search space with one or more global solutions and
multiple local solutions; this means that they are multimodal
problems (Harik, 1995) and therefore, if it is
desired to obtain multiple solutions by using GAs, it
would be necessary to modify their classic functioning
outline for adapting them correctly to the multimodality
of such problems.