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!

处理旅行商问题的离散PSO算法的例程，动态生成路径串，算法本身保证了路径串的合法性-Traveling salesman problem to deal with discrete PSO algorithm routines, dynamically generated path string, the algorithm itself, guarantee the legitimacy of the path string

求解离散问题的pso aco 算法，含german信用数据库-Solving the problem of discrete pso aco algorithm, with german credit database