中文说明： 是学习PCA特征提取的很好的学习资料，是一种双隐层反向传播神经网络，一些自适应信号处理的算法，实现六自由度运动学逆解算法，关于非线性离散系统辨识，人脸识别中的光照处理方法。
English Description：
Learning PCA feature extraction of very good learning materials, is a kind of double hidden layer backpropagation neural network, some adaptive signal processing algorithm, the realization of six degrees of freedom kinematics inverse solution algorithm, a discrete nonlinear system identification, face recognition in the light shining processing method.