PGAFitness - Online in the Cloud

PROGRAM:

NAME

PGAFitness - Maps the user's evaluation function value to a fitness value.

DESCRIPTION

First, the user's evaluation function value is translated to all positive values if any
are negative. Next, this positive sequence is translated to a maximization problem if the
user's optimization direction was minimization. This positive sequence is then mapped to
a fitness value using linear ranking, linear normalization fitness, or the identity (i.e.,
the evaluation function value). This routine is usually used after PGAEvaluate is called.

INPUT PARAMETERS

ctx - context variable
pop - symbolic constant of the population to calculate fitness for

OUTPUT PARAMETERS

none

SYNOPSIS

#include "pgapack.h"
void PGAFitness(ctx, popindex)
PGAContext *ctx
int popindex

LOCATION

fitness.c

EXAMPLE

Example:
Calculate the fitness of all strings in population PGA_NEWPOP after
calling PGAEvaluate to calculate the strings evaluation value.

double energy(PGAContext *ctx, int p, int pop);
PGAContext *ctx;
:
PGAEvaluate(ctx, PGA_NEWPOP, energy);
PGAFitness (ctx, PGA_NEWPOP);

05/01/95 PGAFitness(1)

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