Roulette-wheel selection via stochastic acceptance Adam Liposki, Dorota Lipowska - share improve this answer. Next, you need to figure out how to determine fitness, and how to vary it across generations.
Genetic Algorithms 15/30: Java Implementation of the Roulette Wheel Selection MethodIn code: double rndNumber = rand() / (double) RAND_MAX; double offset = ; int pick = 0; for (i = 0; i. This is called roulette-wheel selection via stochastic acceptance: Here is some code in C: // Find the Roulette Wheel Selection in MatLab. The population does not need to be sorted at all - the key to roulette selection is that the probability of a given individual being selected for.