PCA

In this paper, we show how support vector machine (SVM) can be employed as a powerful tool for $k$-nearest neighbor (kNN) classifier. A novel multi-class dimensionality reduction approach, Discriminant Analysis via Support Vectors (SVDA), is introduced by using the SVM. The kernel mapping idea is used to derive the non-linear version, Kernel Discriminant via Support Vectors (SVKD). In SVDA, only support vectors are involved to obtain the transformation matrix. Thus, the computational complexity can be greatly reduced for kernel based feature extraction. Experiments carried out on several standard databases show a clear improvement on LDA-based recognition

用matlab实现简单的卡尔曼滤波功能，(Using matlab to achieve a simple Kalman filtering)

均质油气藏matlab试井曲线程序，可用于分析地层参数对地层压力的影响。(Homogeneous reservoir testing curve matlab procedures can be used to analyze the impact on the formation pressure formation parameters.)

Drum Level Control Systems - Controle de nivel para sistemas de vapor

原始单纯形法（大M法，无需给出初始基变量）。输入：C是n维行向量，A是m*n的系数矩阵，b是m维列向量 输出：x最优解（如果有的话），fval最优值，flag解的状态说明，interation求解时的循环次数(The original simplex method (big M method, without giving the initial basic variable). Input: C is the n-dimensional row vector, A is the coefficient matrix of m* n, b is the m-dimensional column vector Output: x the optimal solution (if any), fval optimal value, flag state solution description, interation when the number of cycles to solve)

采用有限元的方法求解计算捕捉问题predator-prey (program which applies the finite difference method to estimate solutions of a pair of ordinary differential equations that model the behavior of a pair of predator and prey populations. )

MATLAB 矩阵运算的相关方法和说明。包含矩阵转置，矩阵加减乘除等等(MATLAB matrix processing code and description。)

触发器，eda.在实际的数字系统中往往包含大量的存储单元，而且经常要求他们在同一时刻同步动作，为达到这个目的，在每个存储单元电路上引入一个时钟脉冲（CLK）作为控制信号，只有当CLK到来时电路才被“触发”而动作，并根据输入信号改变输出状态。把这种在时钟信号触发时才能动作的存储单元电路称为触发器(Triggers, eda. The actual digital systems often contain a large number of memory cells, and at the same time they often require synchronized action, to achieve this purpose, the introduction of a clock pulse (CLK) in each memory cell circuit as a control signal , the arrival of the circuit only when CLK was only trigger the operation and change the output state of the input signal. The memory cell circuit that can trigger actions when the clock signal is called a flip-flop)

gslx680 rockchip 源码 兼容gsl1680,gsl1680E，gsl2680.gsl2682,gsl3680,gsl3680B,gsl3670(gslx680 rockchip source)

pll锁相环程序——matlab仿真，使用复数表示的正弦信号(Phase-locked loop matlab simulation program)