Function PGASelect

Function Documentation

void PGASelect(PGAContext *ctx, int popix)

Perform genetic algorithm selection using the defined selection scheme.

Description

The selection scheme used is either the default selection scheme or that specified with PGASetSelectType().

Valid selection methods are proportional, stochastic universal, tournament, probabilistic tournament selection, truncation selection, or linear selection with macros PGA_SELECT_PROPORTIONAL, PGA_SELECT_SUS, PGA_SELECT_TOURNAMENT, PGA_SELECT_PTOURNAMENT, PGA_SELECT_TRUNCATION, PGA_SELECT_LINEAR respectively. This function updates an internal array with the indices of members of popix selected for recombination. These indices may be accessed with PGASelectNextIndex(). See Constants for Selection Types for the constants and section Selection in the user guide for details.

Example

PGAContext *ctx,

...
PGASelect (ctx, PGA_OLDPOP);

Parameters:

  • ctx – context variable

  • popix – symbolic constant of population to select from

Returns:

An array used by PGASelectNextIndex is created which contains the population indices of the selected individuals