IndexError in the best_solution function in line 3124

[augustodamasceno]

After some time running the GA function ga_instance.run(), a IndexError occur in the following line:

best_match_idx = numpy.where(pop_fitness == numpy.max(pop_fitness))[0][0]

Has anyone come across this index error before? How did you resolve it?

After I modified the fitness parameters to a more appropriate setting I was able to get GA to run for longer, however the Index error still persists.

Thanks for anyone's help.

[ahmedfgad]

Hi @augustodamasceno,

It it possible to share the code?

[augustodamasceno]

Thanks. Problem fixed change keep_parents from 1 to -1.

[augustodamasceno]

Problem fixed changing keep_parents from 1 to -1.

I think the problem was the population size decreasing to 0.