感知器神经网络设计举例：将四个输入矢量分为两类，其中两个矢量对应的目标值为1，另两个矢量对应的目标值为0,用学习函数求解. -perceptron neural network design, for example : four input vector divided into two categories. two vector corresponding to a target, and the other two vector corresponding to the target