PGAChange (8)

Repeatedly apply mutation to a string (with an increasing mutation rate) until one or more mutations have occurred.

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  4. PGAChange: Repeatedly apply mutation to a string (with an increasing mutation rate) until one or more mutations have occurred.
  1. Carta.tech
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  3. pgapack
  4. PGAChange: Repeatedly apply mutation to a string (with an increasing mutation rate) until one or more mutations have occurred.

DESCRIPTION

This routine is usually used with PGADuplicate to modify a duplicate string. It is not intended to replace PGAMutation

INPUT PARAMETERS

ctx

- context variable

p

- string index

pop

- symbolic constant of the population containing string p

OUTPUT PARAMETERS

none

SYNOPSIS

#include "pgapack.h"
void  PGAChange(ctx, p, pop)
PGAContext *ctx
int p
int pop

LOCATION

duplcate.c

EXAMPLE

Example:
Change any string in PGA_NEWPOP that is an exact copy of a string
in PGA_OLDPOP.  To be complete, we should check the population again
if any changes are made; for simplicity, we don't.

PGAContext *ctx;
int b, n;
:
n  = PGAGetPopsize(ctx);
for (b=0; b<n; b++)
if (PGADuplicate(ctx, b, PGA_NEWPOP, PGA_OLDPOP, n))
PGAChange(ctx, b, PGA_NEWPOP);