Multivariate-prediction-model

高等应用数学问题的MATLAB求解例子，微积分、线性代数、概率等问题的编程讲解(MATLAB Advanced applied mathematics problem solving examples, calculus, linear algebra, probability and other issues of programming to explain)

本程序基于离散傅里叶变换提取电力系统中的基波相量，简单实用。(This procedure is based on the discrete Fourier transform to extract the power system in the fundamental phase, simple and practical.)

用fox-li数值迭代法模拟模拟激光谐振腔的振荡过程并计算最终的稳态分布(Using fox-li iterative numerical simulation simulate laser resonator oscillation process and calculate the final steady-state distribution)

很好用的NB分类器，有助于理解和掌握NB网络，欢迎大家下载(Very good NB classifier, help to understand and master the NB networks, welcome everyone to download )

说明：  这个程序是用MATLAB编写得一个灰度共生矩阵特征及其一些参数得计算，希望对大家有用。(The MATLAB program is written, a GLCM features and some of the parameters was calculated, and I hope useful.)

说明：  传递矩阵法,针对转子动力学钟一谔一书page30进行编程(Transfer matrix method, the rotor dynamic programming-e book page30)

ECG is the graphical recording of the electrical activity of the heart and recognized biological signal used for clinical diagnosis. The ECG signal is very sensitive in nature, and even if small noise mixed with original signal the various characteristics of the signal changes. The signal voltage level is as low as 0.5 to 5mV and is susceptible to artifacts that are larger than it. The frequency components of a human s ECG signal

信任函数理论，也称为D-S证据理论，是经典概率理论的扩展。特别适应于决策级信息融合。(Belief function theory, also known as DS evidence theory is an extension of classical probability theory. Especially adapted to Decision Level Information Fusion.)

1. 在matlab中分析基于分离变量法的解析解； 2. 利用简单迭代法求解，与解析法结论对比，分析求解结果的精确度。分析过程至少包括：在网格尺寸为0.1 m和1 m两种条件下，两次迭代差值最大为10-10时的分析结论； 3. 利用超松弛迭代法分析，选择松弛因子，分析其对收敛速度（即迭代次数）的影响，并确定最优值。分析过程至少包括：在网格尺寸为0.1和1两种条件下，两次迭代差值最大为10-10时，迭代次数随松弛因子的变化，得到对应的最优松弛因子，与经验值（课本165页式子3.7.15）进行对比。(1. Analyze the analytical solution based on the separation variable method in matlab. 2. Using a simple iterative method to solve, compared with the results of the analytical method to analyze the accuracy of the solution. The analysis process at least includes the following conclusions: when the mesh size is 0.1m and 1m, the maximum difference between two iterations is 10-10. 3. Analyze using the relaxation relaxation iteration method, select the relaxation factor, analyze its influence on the convergence speed (ie the number of iterations), and determine the optimal value. The analysis process at least includes the following: when the mesh size is 0.1 and 1 and the maximum difference between two iterations is 10-10, the number of iterations varies with the relaxation factor, and the corresponding optimal relaxation factor and empirical value are obtained ( Textbook 165 pages (3.7.15) for comparison.)

快速计算一维信号的塔式谱峭度图，选择谱峭度最大值区间，方便确定所需滤波器中心频率及带宽。(Computes the fast kurtogram of signal x.This fast algorithm uses a pyramidal decomposition of the signal into a user-specified number of levels (a good choice is nlevel = 8). The first level is the classical kurtosis of the signal, the second level is the spectral kurtosis in 2 octaves, the third level the spectral kurtosis in 4 half-octaves, etc. Non-integer levels refer to divisions into third octaves. Here below is an illustration on how the frequency band is successively split when increasing the level)