Elitism replacement strategy is applied in GARSC. The elitism ratio , which is in the interval [0, 1), defines how many percentage of highly fit individuals in the current generation P(t) will be directly brought into the next generation P(t + 1). Normally is assigned to a relatively small number to prevent the domination of species on local optimums. The overall clustering process stops when genetic algorithm reaches the predefined number of generations, which should sufficiently ensure the convergence of the genetic algorithm.