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Principal component analysis (PCA) is a popular tool for linear dimensionality reduction and feature extraction. Kernel PCA is the nonlinear form of PCA, which is promising in exposing the more complicated correlation between original high-dimensional features. In this paper, we first talk about the basic ideas of PCA and kernel PCA, and then focus on the reconstruction of pre-images for kernel PCA. We also give an introduction on how PCA is used in active shape models (ASMs), and discuss how kernel PCA can be applied to improve traditional ASMs. Then we show some experiment results to compare the performance of kernel PCA and traditional PCA for pattern classification. We also implement the kernel PCA-based ASMs, and use it to construct human face models.

穷举法求解0-1整数规划的matlab程序(The brute-force method of solving 0-1 integer programming matlab program)

《雷达系统设计MATLAB仿真》一书附带的所有程序和函数，包括信号仿真以及模糊函数的实现(The radar system design matlab simulation, a book comes with all procedures and functions, including signal simulation and Realization of the fuzzy function)

solving the equation

该代码主要用于求解微分方程问题，他是由Matlab编写而成。(The code is mainly used for solving differential equations, he is prepared from Matlab.)

使用matlab工具，用三种方法实现镜头边缘的检测。(Use of matlab tools, using three methods to achieve the lens edge detection.)

个人开发，用c++描述一种有限状态搜索机算法，根据设定的限制条件搜索满足需求的码字组合，用于搜索满足条件的ldpc码(a finite state searching program by c++)

利用一种PSO算法优化求解PID参数，得到了良好效果(Using a PSO algorithm for PID parameter optimization solution, to get good results)

相空间重构函数，可以直接用于时间序列重构，是混沌方法的基础( Function of the phase space reconstruction, which can be directly used for time series reconstruction, and it is the foundation of the chaos method)

三相逆变电源的在Matlab中的仿真设计。(Three-phase inverter power supply design simulation in Matlab)