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基于AIC,BIC准则的变量选择方法的matlab程序实现代码(Based on AIC, BIC criteria for variable selection methods matlab program implementation code)

梯度下降法是一個一階最佳化算法，通常也稱為最速下降法。 要使用梯度下降法找到一個函數的局部極小值，必須向函數上當前點對應梯度（或者是近似梯度）的反方向的規定步長距離點進行疊代搜索。如果相反地向梯度正方向疊代進行搜索，則會接近函數的局部極大值點；這個過程則被稱為梯度上升法。(The gradient descent method is a first-order optimization algorithm, also commonly referred to as the steepest descent method. To find the local minimum of a function using the gradient descent method, an iterative search must be performed to the specified step distance point in the opposite direction of the gradient (or approximate gradient) of the current point on the function. If the search is reversed in the opposite direction to the positive direction of the gradient, it will approach the local maximum point of the function; this process is called the gradient ascent method.)

用于产生指定大小NxN的块，含有edge的信息，可以指定edge的方向。(Generate a directional block with certain edge.)

一个贪婪算法的仿真程序，以及介绍的ppt，欢迎大家一起研究。(A greedy algorithm for the simulation program, as well as the introduction ppt, welcomed everyone to study together.)

matlab遗传算法多目标优化，双目标函数优化(matlab genetic algorithm for multi-objective optimization, dual-objective optimization)

The program computes and plots the equation of time, the declination, and an analemma curve for various orbital parameters. The analemma is the curve traced by the position of the sun, measured at clock noon, over a year.

matlab中值滤波源代码，对于图像处理的人员有一定的参考意义。。(median filter matlab source code for image processing personnel have some reference value. .)

说明：  一阶无延时的MPC，基于MAC，预测控制(First-order delay-free MPC, predictive control based on MAC)

说明：  使用matlab二元傅里叶变换全息图，字符“E”的MATLAB模拟计算全息图，字符“E”的MATLAB模拟计算全息图的再现图像(Character "E" in the MATLAB simulation of the reproduced image of the hologram)

说明：  一些各种滤波的程序，包括中值，均值，高斯滤波(Some of the various filtering procedures, including median, mean, Gaussian filter)