From: Nonzero
Subject: Genetic Programming Example in Koza's Book Help Needed
Date: 
Message-ID: <2e3cbcd8.0110281416.21a143d6@posting.google.com>
Hello

First off, thanks to everyone who helped me get my LISP system up and
running.  It's really great.

OK.  I've been debugging the code I have for KOZA's book.  (Got it
on-line, still were a few errors)  Anyway when I run the program, (the
kernal and the program to find the formula for a line) I get a weird
output:

Generation 0: Average standardized-fitness = 20.9239
The best individual program of the population had a 
standarized fitness measure of 1.399 and 0 hits.
It was:
(+ X -0.30777)
*** - SYSTEM::%STRUCTURE-STORE: (+ -0.30777) is not a structure of
type INDIVIDUAL

Just so you know, I have individual as:
(defstruct individual
program
(standardized-fitness 0)
(adjusted-fitness 0)
(normalized-fitness 0)
(hits 0))

Any ideas what might be causing this?

Thanks is advanced
-Nonzero314
From: Nonzero
Subject: Re: Genetic Programming Example in Koza's Book Help Needed
Date: 
Message-ID: <c0ef10d8.0110291106.cead6cf@posting.google.com>
Never mind.  I'm an idiot. 

I fixed it.

:-)
From: Johan Ur Riise
Subject: Re: Genetic Programming Example in Koza's Book Help Needed
Date: 
Message-ID: <873d3rzfvr.fsf@dill.topp.dyndns.com>
··········@Hotmail.com (Nonzero) writes:

> Never mind.  I'm an idiot. 
> 
> I fixed it.

What would you have been, if you were not able to fix it? J.
comp.lang.lisp / 2001 / oct