通过matlab代码，是一种双隐层反向传播神经网络，正确率可以达到98％，快速扩展随机生成树算法，对于初学matlab的同学会有帮助。- By matlab code, Is a two hidden layer back propagation neural network, Accuracy can reach 98 , Rapid expansion of random spanning tree algorithm, Matlab for beginner students will help.