- the value of the function is being improved, but only after more than the 4th digit, too small a change to show up on this limited display; or
- the algorithm is progressing by finding locations that violate constraints less . Generally speaking, the f(x) value that is accepted can even increase if the position would violate the constraints less than the previous position.
GA best f(x)/ mean f(x) don't change
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Nikolas Spiliopoulos
le 6 Avr 2018
Commenté : Walter Roberson
le 7 Avr 2018
Hi all,
I'm using GA for optimization and my problem is that I'm getting the same best and mean value and it doesn't change after each generation (screenshot attached)
any ideas why?
I was thinking about crossover, mutation values but I'm not sure
many thanks
Nikolas
0 commentaires
Réponse acceptée
Walter Roberson
le 6 Avr 2018
When you see a constant mean or best, but the stall generations is 0, then the implication is that one of these two things is happening:
2 commentaires
Walter Roberson
le 7 Avr 2018
You can use an output function; see https://www.mathworks.com/help/gads/custom-output-function-for-genetic-algorithm.html
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Direct Search dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!