Hi all, does ECJ provide any method for limiting the number of nodes in GP trees produced by crossover and mutation? I know that it does provide depth limits like max-depth = 17. I also want to set a limit in terms of number of nodes, like max-nodes = 750. James -- Dr. James McDermott Natural Computing Research & Applications Group, Complex and Adaptive Systems Laboratory, University College Dublin, Ireland. http://www.skynet.ie/~jmmcd