修正过的pso 算法 属于离散型的pso程序，可用于变量筛选，效果不错！-Modified discrete PSO algorithm belonging to the PSO procedure, can be used for variable selection, good results!

?本程序在matlab环境下，对粒子群编程，完成对两个变量函数的寻优(In this program, in the MATLAB environment, the particle swarm optimization is used to optimize the two variable functions.)