spra333

this code about optimization

％ EM algorithm for k multidimensional Gaussian mixture estimation ％ ％ Inputs: ％ X(n,d) - input data, n=number of observations, d=dimension of variable ％ k - maximum number of Gaussian components allowed ％ ltol - percentage of the log likelihood difference between 2 iterations ([] for none) ％ maxiter - maximum number of iteration allowed ([] for none) ％ pflag - 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) ％ Init - structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) ％ ％ Ouputs: ％ W(1,k) - estimated weights of GM ％ M(d,k) - estimated mean vectors of GM ％ V(d,d,k) - estimated covariance matrices of GM ％ L - log likelihood of estimates ％( EM algorithm for k multidimensional Gaussian mixture estimation Inputs: X (n, d)- input data, n = number of observations, d = dimension of variable k- maximum number of Gaussian components allowed ltol- percentage of the log likelihood difference between 2 iterations ([] for none) maxiter- maximum number of iteration allowed ([] for none) pflag- 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) Init- structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) Ouputs: W (1, k)- estimated weights of GM M (d, k)- estimated mean vectors of GM V (d, d, k)- estimated covariance matrices of GM L- log likelihood of estimates)

粒子群算法求解最优化算法的MATLAB程序！！！！(Particle swarm optimization algorithm for solving the MATLAB program! ! ! !)

NUMERICAL DIFFERENCE APPROXIMATION based on Taylor s expansion---the program give the finite difference coefficient for any number of discrete point. also with that u can differentiate of any function in any order with high accuracy. also u can use it to develop a general finite difference program.

说明：  四种滤波器的设计，里面有详细的程序与图像，可以运行出来的(Four kinds of filter design, there is a detailed procedure and image, can run out of the filter )

Gram chmitt using matlab, it is free example

Astar算法，路径规划中的经典算法，求解最短路径的最优算法(Astar algorithm, the classical algorithm in path planning, the best algorithm to solve the shortest path)

计算广义的hurst指数，本课题组编写程序，欢迎使用(compute general hurst, our group write program,welcome to use)

发射角和到达角二维角度自动配对，其中主要解决一个angle函数的问题。(Emission angle and the angle of arrival automatically paired two-dimensional angle, which is mainly to solve a problem of angle function.)

Embedding text into random pixels of an image