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Look at the
https://github.com/eclab/ecj/blob/master/ecj/ec/gp/breed/SizeFairCrossoverPipeline.java

Found it fairly doing well in controlling the bloat.

Cheers
Uday

On Wed, Apr 13, 2016 at 10:37 AM, White, David <[log in to unmask]>
wrote:

> Hi Everyone,
>
> In 2008, Poli and McPhee published “Parsimony Pressure Made Easy: Solving
> the Problem of Bloat in GP.”
>
> In the paper, they outline a fairly straightforward way of controlling
> mean program size in a GP population.
>
> Has anyone implemented this in ECJ, please? I’d like to use it and don’t
> want to repeat the effort if it’s already been done.
>
> Thanks!
>
> David
>