用平面波展开法计算二维声子晶体带隙,有循环检测，周期性检测，利用最小二乘算法实现对三维平面的拟合。- Computation Method D phononic bandgap plane wave, There are cycle detection, periodic testing, Least-squares algorithm to fit a three-dimensional plane.

完整的基于HMM的语音识别系统，Gabor小波变换与PCA的人脸识别代码，利用最小二乘算法实现对三维平面的拟合。- Complete HMM-based speech recognition system, Gabor wavelet transform and PCA face recognition code, Least-squares algorithm to fit a three-dimensional plane.

单径或多径瑞利衰落信道仿真，利用最小二乘算法实现对三维平面的拟合，旋转机械二维全息谱计算。- Single path or multipath Rayleigh fading channel simulation, Least-squares algorithm to fit a three-dimensional plane, Rotating machinery 2-d holographic spectrum calculation.

非归零型差分相位调制信号建模与仿真分析 ，利用最小二乘算法实现对三维平面的拟合，内含心电信号数据及运用MATLAB写的源代码。- NRZ type differential phase modulation signal modeling and simulation analysis, Least-squares algorithm to fit a three-dimensional plane, ECG data and includes source code written in MA

用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述,ML法能够很好的估计信号的信噪比,利用最小二乘算法实现对三维平面的拟合。- Monte Carlo simulation method of calculating the American option price and basic descr iption, ML estimation method can be a good signal to noise ratio, Least-squares algorithm to fit a