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lib/AI/ParticleSwarmOptimization.pm  view on Meta::CPAN

        randStartVelocity
        stallSpeed
        themWeight
        verbose
        /;

    die "-dimensions must be greater than 0\n"
        if exists $params{-dimensions} && $params{-dimensions} <= 0;

    if (defined $self->{verbose} and 'ARRAY' eq ref $self->{verbose}) {
        my @log = map {lc} @{$self->{verbose}};
        my %logTypes = (
            better => kLogBetter,
            stall  => kLogStall,
            iter   => kLogIter,
            detail => kLogDetail,
        );

        $self->{verbose} = 0;
        exists $logTypes{$_} and $self->{verbose} |= $logTypes{$_} for @log;
    }

    $self->{numParticles} ||= $self->{dimensions} * 10
        if defined $self->{dimensions};
    $self->{numNeighbors} ||= int sqrt $self->{numParticles}
        if defined $self->{numParticles};
    $self->{iterations}        ||= 1000;
    $self->{exitPlateauDP}     ||= 10;
    $self->{exitPlateauWindow} ||= $self->{iterations} * 0.1;
    $self->{exitPlateauBurnin} ||= $self->{iterations} * 0.5;

lib/AI/ParticleSwarmOptimization.pm  view on Meta::CPAN

Determines how many iterations to run before checking for plateaus.

Defaults to 50% of the number of iterations (I<-iterations>).

=item I<-verbose>: flags, optional

If set to a non-zero value I<-verbose> determines the level of diagnostic print
reporting that is generated during optimization.

The following constants may be bitwise ored together to set logging options:

=over 4

=item * kLogBetter

prints particle details when its fit becomes bebtter than its previous best.

=item * kLogStall

prints particle details when its velocity reaches 0 or falls below the stall
threshold.

=item * kLogIter

Shows the current iteration number.

=item * kLogDetail

Shows additional details for some of the other logging options.

=item * kLogIterDetail

Shorthand for C<kLogIter | kLogIterDetail>

=back

=back

=item B<setParams (%parameters)>