This function calculates the RND from a cross-section of put prices using the PCA method as described in O. Bondarenko. ``Recovering Risk-Neutral Densities: A New Nonparametric Approach, UIC working paper, September 2000. -This function calc

这个程序实现了基于主成份的人脸可视化分析,这是一个完整程序代码.-This program implements the main components of the human face based on visual analysis, this is a complete code.

基于PCA实现的人脸检测，代码完整，只需要加入样本和测试图片。-this is a detection of face based of PCA.