RECTANGLE-COVERAGE(1) User Contributed Perl DocumentationRECTANGLE-COVERAGE(1)NAMErectangle-coverage.pl - Find the dot maximally covered by (random)
rectangles
SYNOPSIS
You might have to do
prompt% sudo cpan Tk
prompt% sudo cpan Algorithm::RectanglesContainingDot
specially this last one, first, since that module is not installed by
default with Algorithm::Evolutionary.
prompt% ./rectangle-coverage.pl <number-of-rectangles> <arena-side> <bits-per-coordinate> <population> <number of generations> <selection rate>
Or
prompt% ./rectangle-coverage.pl
And change variable values from the user interface
DESCRIPTION
A demo that combines the Algorithm::Evolutionary::Op::Easy module
with Tk to create a visual demo of the evolutionary
algorithm. It generates randomly a number of rectangles, and shows
how the population evolves to find the solution. The best point is
shown in darkening yellow color, the rest of the population in
green.
Use "Start" to start the algorithm after setting the variables, and
then Finish to stop the EA, Exit to close the window.
Default values are as follows
· number of rectangles: 300
· arena-side: 10 This is independent from the number of pixels, set
by default to 600x600.
· bits-per-coordinate: 32 (this is the chromosome length divided by
two; there are two "genes")
· population size: 64
· number of generations: 200
· selection rate: 20% (will be replaced each generation); this means
it's a steady state algorithm, which only changes a part of the
population each generation.
This program also demonstrates the use of caches in the fitness
evaluation, so be careful if you use too many bits or too many
generations, check out memory usage.
Console output shows the number of generations, the winning chromosome,
and fitness. After finishing, it outputs time, cache ratio and some
other things.
SEE ALSO
First, you should obviously check
Algorithm::Evolutionary::Op::Easy, and then these other classes.
· Algorithm::Evolutionary::Op::Base.
· Algorithm::Evolutionary::Individual::Base.
· Algorithm::Evolutionary::Fitness::Base.
Tk is a prerrequisite for this program, as well as
Algorithm::RectanglesContainingDot. Obviously,
Algorithm::Evolutionary should be installed too, just in case
you got this independently.
AUTHOR
J. J. Merelo, "jj (at) merelo.net"
Copyright
This file is released under the GPL. See the LICENSE file included in
this distribution, or go to http://www.fsf.org/licenses/gpl.txt
CVS Info: $Date: 2012/12/08 10:12:37 $
$Header: /media/Backup/Repos/opeal/opeal/Algorithm-Evolutionary/scripts/rectangle-coverage.pl,v 3.5 2012/12/08 10:12:37 jmerelo Exp $
$Author: jmerelo $
$Revision: 3.5 $
perl v5.20.2 2014-10-25 RECTANGLE-COVERAGE(1)
