In the run described below, it looks like the evolutionary process is
favoring low fitness values, but whatever is keeping track of the
"best individual" prefers high fitnesses. Am I missing something?

(I should note that I'm using a new version of
ec.coevolve.CompetitiveEvaluator that Liviu sent me.)

Thanks,

Peter Drake
Assistant Professor of Computer Science
Lewis & Clark College
http://www.lclark.edu/~drake/


I modified coevolve1.params to use a random-two-ways tournament:

eval.style = rand-2-ways
eval.group-size = 7

Then I ran:

java ec.Evolve -file ec/app/coevolve1/coevolve1.params

Here's the beginning and end of the resulting out.stat file:

Generation: 0
Best Individual:
Evaluated: T
Fitness: 53.0
  1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 1 0 1 1 1 0 0 1 1 0 1 1 0 1 0 1 0 1 1
1 1 0 1 1 0 0 0 1 1 1 1 0 0 1 1

Generation: 1
Best Individual:
Evaluated: T
Fitness: 35.0
  1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 1 0 1 1 1 0 0 1 1 0 1 1 0 1 0 1 0 1 1
1 1 0 1 1 0 0 0 1 1 1 1 1 0 1 1

Generation: 2
Best Individual:
Evaluated: T
Fitness: 40.0
  1 0 0 0 1 1 1 1 1 0 1 1 0 1 0 1 1 0 1 1 1 0 1 1 0 0 1 1 1 1 1 1 1 1
1 1 1 1 1 1 0 0 1 0 1 1 1 0 1 1

...

Generation: 99
Best Individual:
Evaluated: T
Fitness: 5.0
  1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Best Individual of Run:
Evaluated: T
Fitness: 53.0
  1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 1 0 1 1 1 0 0 1 1 0 1 1 0 1 0 1 0 1 1
1 1 0 1 1 0 0 0 1 1 1 1 0 0 1 1