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Edmond Dantes wrote:
> placid wrote:
>
> >
> > alimoe wrote:
> >> > Genetic Programming or Genetic Algorithms?
> >>
> >> whats the difference?
> >
> >
> > Genetic Programming:
> > is an automated methodology inspired by biological evolution to find
> > computer programs that best perform a user-defined task.
> >
> > http://en.wikipedia.org/wiki/Genetic_Programming
> >
> > Genetic Algorithms: search technique used in computer science to find
> > approximate solutions to optimization and search problems.
> >
> > http://en.wikipedia.org/wiki/Genetic_algorithms
>
> I would tend to think that Lisp is more suited for Genetic Programming than
> Python is. However, it is possible to do. Heck, I even had the crazy idea
> of doing Genetic Programming in C++ once, however ugly that would've
> been!!!!!

My university (RMIT) has a framework for doing Genetic Programming in
C++ and it was really ugly at all.

Edmond Dantes wrote:
> I would tend to think that Lisp is more suited for Genetic Programming than
> Python is. However, it is possible to do. Heck, I even had the crazy idea
> of doing Genetic Programming in C++ once, however ugly that would've
> been!!!!!
>
> Actually, there is an AI project that I'm doing in Python rather than Lisp
> because Python is much better supported. A pity, really, since Lisp has so
> much more power and expressiveness. Alas, Python has extensive libraries
> and are well documented to boot. Only an academic would have the time to do
> anything with Lisp.

I'm not sure how important expressiveness is for GP. The number of
operations on programs you have to support is quite small
(recombination, mutation, duplication, anything else?), and any
advantage LISP has in handling the tree structures is probably not all
that important.

Of course, the big advantage of LISP is the data/code equivalence. In
LISP, you can just eval the programs, whereas in Python you have to
expend quite a bit of effort running them. And that's no small thing.
It's not too bad, though. I've done GP in Python myself, and I it was
pretty straightforward to convert the program trees into expressions
(to be evaled in Python, or compiled and executed in C or Fortran).

But there's really no question that genetic programming is a problem
tailor-made for LISP.


Carl Banks

placid wrote:
> is this a real robot or a computer simulation?

Just a sim, but the more I think about it, the more realism it seems
like I need.

Carl Banks wrote about PyODE. I thnk Soya or PySoy is integrating this
soon, so I will be looking into that.

thx

alimoe enlightened us with:
> I am interested in coding an app which uses physics and 3d and
> neural nets and genetics. Any pointers?

For the physics and 3D graphics you could check out Blender. It's a 3D
modelling/animating program that's scriptable by Python.

Sybren
--
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself?
Frank Zappa