(5) Similar-taxi and local competition: First, the individuals will find the local optimum in every group by competing with each other. Then, all individuals are scattered around the winner based on the normal distribution during new individuals’ generation, and the score of each individual is computed to finda new winner. If the score of new winner is not higher than that of the old winner, we call the phenomenon “the group is mature”. Otherwise, the new winner will be instead of the old winner of the group, and the new winner’s information will be recorded to the local billboard. The process is repeated until the group is mature.