Comparisons of selection strategy in genetic algorithm

The roulette wheel selection strategy and tournament selection strategy in genetic algorithm(GA) are taken as examples and their performance is investigated on 13 benchmark functions.The performance of different selection strategies are compared and analyzed.Experimental results show that tournament selection strategy is more general than roulette wheel selection strategy, and also with better performance.Further experiments on tournament selection strategy show that a group scale with 60% to 80% of the population size performs better.These results give the useful guideline to design more efficient selection strategy.