用神经网络中的BP网络来解决“异或问题”，异或函数在两个输入不等的情况下输出1，相等的情况输出0。-BP neural network with the network to solve the " exclusive-OR problem," the two input exclusive-OR function in the case of output ranging from 1, equal to the output of 0.

一个简单的神经网络实现二分类问题，里面包含代码，以及训练集和测试集的数据，可以直接用的，对初学者是不错的资源-A simple neural network to achieve the two-class problem, which contains the code, as well as training and testing data sets can be directly used, is a good resource for beginners