k-means

用Matlab实现的简单的二维主成分分析算法，最后以点阵图输出结果(Using Matlab realize a simple two-dimensional principal component analysis algorithm, the final output to bitmap)

welch 和burg 算法实现功率谱估计(welch and burg algorithm to achieve power spectrum estimation)

MATLAB 实用工具包，数学建模常用源码，包括最优化，数值计算等(MATLAB utility package, commonly used in mathematical modeling of source, including optimization, numerical calculation)

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format figure to workspace in matlab you can using matlab r2009b don t later

产生正态变量的随机数,进行未知参数的区间估计 产生两个正态总体的随机数, 进行未知参数均值差,方差比的区间估计.( generate normial variable, estimate unknown paramatric interval )

用MATLAB仿真递推最小二乘法的新方法，但不是很完善，有待改进(Recursive least squares method using MATLAB simulation of the new method, but not perfect, room for improvement)

交互式多模型算法卡尔曼滤波仿真代码，程序中采用了两个模型(Interacting multiple model Kalman filter algorithm simulation code, the program uses two models)

说明：  二维平平腔激光振荡，采用菲涅尔衍射和fox-li方法，得到两维幅度和相位输出。考虑镜面倾斜的情况。(Flat two-dimensional oscillating cavity laser using Fresnel diffraction and the method of fox-li, the two-dimensional amplitude and phase output. Consider the case of mirror tilt.)

Numerical optimization, Steepest descent