PGAFitness3

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

Usage

void PGAFitness(ctx, popindex)

PGAContext *ctx

int popindex

Input parameters

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

Output parameters

none

Location

fitness.c

Examples

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);

Releases

8 releases since Debian 1.1 (Buzz); the text changed 1 time.