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The chromosomes are evaluated using a classical mathematical method
for solving differential equations like, Euler Method, etc.
The result of this method
is a curve represented by pairs of y-t-values. To select the
fittest chromosome for each population a quality value has to be
determined, defined as following:
The sum of all y-values is the objective function that determines
the evaluation value for each chromosome.
Given pairs of
=0, 1, 2, ..., n
n is the maximum number of steps used to approximate the result of
the differential equation by the Runge-Kutta method. Then
the objective function is defined: