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Re: request for help in my search project with JGAP
by Mauricio Noda
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Amirat,
V and M values are already embedded in the default mutation and crossover operators bundled with the framework, and are passed through constructors. Although the default operators don´t work very well with composite genes.
All chromosomes that are part of the genotype goes to the next iteration. If you don´t want some chromosomes to survive to the next iteration, they should be removed with natural selectors (i.e. those with low fitness values).
The evolution is a combination of genetic operators (increasing population) and natural selectors (decreasing population) being iterated over and over.
From: jgap@...
To: djanahana@...; jgap-users@...
Date: Tue, 8 May 2012 10:56:49 +0200
Subject: Re: [jgap-users] request for help in my search project with JGAP
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_______________________________________________ jgap-users mailing list jgap-users@... https://lists.sourceforge.net/lists/listinfo/jgap-users
V and M values are already embedded in the default mutation and crossover operators bundled with the framework, and are passed through constructors. Although the default operators don´t work very well with composite genes.
All chromosomes that are part of the genotype goes to the next iteration. If you don´t want some chromosomes to survive to the next iteration, they should be removed with natural selectors (i.e. those with low fitness values).
The evolution is a combination of genetic operators (increasing population) and natural selectors (decreasing population) being iterated over and over.
From: jgap@...
To: djanahana@...; jgap-users@...
Date: Tue, 8 May 2012 10:56:49 +0200
Subject: Re: [jgap-users] request for help in my search project with JGAP
Amirat,
for making a custom crossover or mutation operator, you have
to implement your own class for crossover (copy org.jgap.impl.CrossoverOperator
to another class and modify it, then set it in your configuration; do the same
for class org.jgap.impl.MutationOperator).
--> 1. remove all standard operators via
conf.getGeneticOperators().clear() (conf is an instance of class
org.jgp.Configuration)
--> 2. add your custom operators by calling
conf.addGeneticOperator(yourOperatorInstance) for your crossover and your
mutation operator each.
Looking at the examples provided should help a lot in
understanding how to configure JGAp appropriately (see package
examples).
Best
From: Amirat Hanane [mailto:djanahana@...]
Sent: Monday, May 07, 2012 11:30 PM
To: jgap-users@...
Subject: [jgap-users] request for help in my search project with JGAPGood morning
I’am a student in a doctorial school and I’m preparing a paper this month (if GOD willing of course)
I have a few questions if you don’t mind
In my program I will
1- Generate initial population and a defaultConfiguration //where my chromosomes is an array of CompositeGene ,each composite Gene is a list of IntegerGene ,and I think this is OK
2- Fix a CrossOver rate
3- Choose a random number V between(0,100)
4- If (V<Crossover Rate) then we not will apply the crossover operator
Else we will apply the crossover
How can we make that the crossover will not be in an iteration ??
5-Fix the mutation rate
*Choose a random number M between (0,100)
6- If (M< Mutation Rate) then we will not apply the mutation operator
Else we will apply the mutation (choose a random number of chromosomes to mutate, a random choice of chromosome,a random choice for the CompositeGene, a random choice of Gene in the CompositeGene that it was choose )
Can you please tell me how to do this ??is it the way of mutation in CompositeGene???
Am I need to specify my own operator, I took a look on the javadocs but I didn’t find a lot of information about mutation in the case of CompositeGene ???
I feel lost with Operate,doCrossover,applygeneticOperator,…… I really don’t know what’s the appropriate in my case ???
As a selector I will use “WeightedRouletteSelector “,when I made
conf.addNaturalSelector(new WeightedRouletteSelector(conf), false);
I apply this selector, that’s it??or I need an applyOperator???
My last question is how to say that a chromosome will be one of the next generation ?is it automatically when we make
For(int i=0;i<nbr_iteration;i++){Genotype.evolve();}
sorry for my english ,i am trying to improuve my skills
Best regards
------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________ jgap-users mailing list jgap-users@... https://lists.sourceforge.net/lists/listinfo/jgap-users
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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