BP神经网络用于函数拟合与模式识别，是学习PCA特征提取的很好的学习资料，Gabor小波变换与PCA的人脸识别代码。- BP neural network function fitting and pattern recognition, Is a good learning materials to learn PCA feature extraction, Gabor wavelet transform and PCA face recognition code.

相关分析过程的matlab方法，BP神经网络用于函数拟合与模式识别，小波包分析提取振动信号中的特征频率。- Correlation analysis process matlab method, BP neural network function fitting and pattern recognition, Wavelet packet analysis to extract vibration signal characteristic frequency.

基于混沌的模拟退火算法，小波包分析提取振动信号中的特征频率，BP神经网络的整个训练过程。- Chaos-based simulated annealing algorithm, Wavelet packet analysis to extract vibration signal characteristic frequency, The entire training process BP neural network.