说明：  粒子群算法，求解函数最小值，该算法对于Hepper的模拟鸟群(鱼群)的模型进行修正，以使粒子能够飞向解空间，并在最好解处降落，从而得到了粒子群优化算法
(The particle swarm optimization algorithm solves the minimum value of the function. The algorithm corrects the model of Hepper's simulated bird group (fish group) so that the particles can fly to the solution space and land at the best solution, thus obtaining the particle swarm optimization algorithm.)