Hello , i novice to the ECJ as well GP too. i wanted to know
can we use ECJ, GP like neural network, means i have a data sets
and i wanted to find out functional relationship between dependent and
independent data. Like functional regression demos here i donn't know
peior the fucntion i want to search through GP.
If it is possible can you guide me what changes should be incorparate.
Assuming you want to use ECJ for both your GP and GA, and it's truly a
*nested* GA (a whole GA run when evaluating a single individual), you
should be able to do it something like this:
-1. Make a special subclass of Initialializer, which you will use.
0. Make a global integer gaRandomOffset in your Initializer, starting
1. At the beginning of your GP run -- during Initializer's setup
perhaps, load and store somewhere (in the Initializer) a
ParameterDatabase which holds the parameters for your GA runs. Let's
say it's called 'database'. You can get
a parameter database easily with new ParameterDatabase(filename).
2. On evaluation, call
EvolutionState state2 = Evolve.initialize(state.initializer.database,
3. You'll need to stash YOUR EvolutionState in state2 somewhere so
state2's Problem can find it -- or hack globals up somehow.
4. Then call
You may want to modify the startFresh method (or create another one) so
it doesn't do state.output.close(); at the very end, as that'll close
stdout while your original EvolutionState is still using it.
5. Do your post-hoc analysis, then
state2 = null; // let gc
On Sep 19, 2005, at 3:07 PM, Arjan Seesing wrote:
> I'm going to use a nested GA inside my GP run. So to evaluate my GP
> programs, I'm first going to run a small GA run on a some extra data
> to be able to evaluate the individuals.
> My question is what would be the easiest way to call ECJ with the
> lowest overhead possible.
> I've been looking at the Console app which starts ECJ itself, but it's
> all so correlated to the gui, it is impossible to use the code there.
> I will be using the parameter database to pass data to the inner GA
> but I haven't decided how to pass data back.
> Some hints would be appreciated!