pgaevaluate(1) [debian man page]

PGAEvaluate(1)							      PGAPack							    PGAEvaluate(1)

NAME

       PGAEvaluate - Calls a user-specified function to return an evaluation of each string in the population.

DESCRIPTION

       The  user-specified function is only called if the string has been changed (e.g., by crossover or mutation) or the user has explicitly sig-
       naled the string's evaluation is out-of-date by a call to PGASetEvaluationUpToDateFlag().

INPUT PARAMETERS

       ctx    - context variable
       pop    - symbolic constant of the population to be evaluated
       f      - a pointer to a function to evaluate a string.  This function will be called once for each string in population pop  that  requires
	      evaluation.   This  function must return a double (the evaluation function value) and must fit the prototype double f(PGAContext *c,
	      int p, int pop);
       comm   - an MPI communicator

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       void  PGAEvaluate(ctx, pop, , comm)
       PGAContext *ctx
       int pop
       double (*f)(PGAContext *, int, int)
       MPI_Comm comm

LOCATION

       parallel.c

EXAMPLE

       Example:
       Evaluate all strings in population PGA_NEWPOP using the user-defined
       evaluation function Energy.

       double Energy(PGAContext *ctx, int p, int pop) {
       :
       };

       PGAContext *ctx;
       :
       PGAEvaluate(ctx, PGA_NEWPOP, Energy, MPI_COMM_WORLD);

								     05/01/95							    PGAEvaluate(1)

PGASetRealInitRange(2)						      PGAPack						    PGASetRealInitRange(2)

NAME

       PGASetRealInitRange - sets the upper and lower bounds for randomly initializing real-valued genes.

DESCRIPTION

       For  each  gene these bounds define an interval from which the initial allele value is selected uniformly randomly.  The user specifies two
       arrays containing lower and bound for each gene to define the interval.	This is the default strategy for initializing real-valued strings.
       The default interval is $[0,1.0]$ for each gene.

INPUT PARAMETERS

       ctx    - context variable
       min    - array containing the lower bound of the interval for each gene
       mac    - array containing the upper bound of the interval for each gene

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       void  PGASetRealInitRange(ctx, min, max)
       PGAContext *ctx
       double *min
       double *max

LOCATION

       real.c

EXAMPLE

       Set the initialization routines to select a value for each real-valued
       gene i uniformly randomly from the interval [-10.,i]
       Assumes all strings are of the same length.

       PGAContext *ctx;
       double *low, *high;
       int i, stringlen;
       :
       stringlen = PGAGetStringLength(ctx);
       low  = (double *) malloc(stringlen*sizeof(double));
       high = (double *) malloc(stringlen*sizeof(double));
       for(i=0;i<stringlen;i++) {
       low[i]  = -10.0;
       high[i] = i;
       }
       PGASetRealInitRange(ctx, low, high);

								     05/01/95						    PGASetRealInitRange(2)