MRI_ex

川大的matlab教程，带有说明和源码，实用性强(Sichuan University of matlab tutorials, with notes and source, practical)

MATLAB code on linear minimum mean square error (LMMSE) estimation and its application to the problem of channel equalization in digital communication systems. amr amin: code on the application of channel equalization in digital communication systems.

求复杂网络中两节点i1与i2间的最短路径及其长度 采用Floyd算法计算两节点的距离(Demand complex networks, two nodes i1 and i2 between the shortest path and its length using the Floyd algorithm to calculate the distance of two nodes)

newton-raphson search method optimization methodsd and algorithms

very good excellent amazing

说明：  边缘方向直方图matlab程序，直方图为提取8个方向的的统计概率(Edge direction histogram matlab program, the histogram for the extraction of eight directions of the statistical probability)

This project is used to convert a file to array code .

一次可靠度的HLRF算法。随机向量的概率模型采用Nataf分布，考虑变量相关性。验算点搜寻采用U空间的梯度迭代算法。(This is a first-order reliability method based on HLRF algorithm. A multivariate distribution model,Nataf model,is used to generate the random variables. To search the design point in indenpent standard Gauss space, a kind of gradient iterative algorithm is adopted.)

四旋翼无人机SIMULINK建模，PSO_SA优化PID参数 reverse.m 作用：将History表中的string形式的key值转换为赋给九个全局变量temp00， ... ,temp08运行sum1.slx，可以直接观察此组参数的波形。 History 作用：映射表，将一组参数（temp00, ..., temp08）映射到这组参数的ITAE指标。 trojectory.m 作用：定义一条路径并进行路径压缩，通过不断向sum.slx传递位置参数，控制无人机运动，并接受无人机运动过程，做出无人机运动位置图像。 sum1.slx 作用：从外部接受一组位置关系（x,y,z）,模拟无人机由原点(0,0,0)运动到该位置并保持稳态这个过程中无人机的位置变化，并向外部反馈。 PSO_3D.m 作用：调用sum3D.slx，通过PSO得到内循环最优解的参数。 sum3D.slx 作用：获取.m文件中设置好的全局变量的值，模拟内循环三个角度的变化。 PSO_History.m 作用：调用sum9D.slx，通过PSO得到外循环最优解的参数，此过程已被History表优化。 PSO_SA.m 作用：调用sum9D.slx，通过PSO得到外循环最优解的参数，此文件在PSO_History.m基础上被模拟退火算法优化(Four rotor UAV SIMULINK modeling, PSO_SA optimize PID parameters)

这是用牛顿法做的，绝对正确无误，请放心下载。(This is done using Newton s method is definitely correct, please rest assured that download.)