一种结合PSO粒子群改进蝙蝠算法，用sphere对其在不同参数设置下运行50次，计算最优值、最差值、平均值、方差进行对比(A combination of PSO particle swarm optimization bats algorithm, with the sphere in the different parameters set to run 50 times, calculate the optimal value, the worst value, the average, the variance were compared)