ecga

K-nearest neighbors 搜索 聚类时经常使用的一种方法 国外网站转载( The following utilities are provided: - Nearest neighbor - K-Nearest neighbors - Radius Search They al supports N-dimensions and work on double, it is possible to choose if return the distances. Here is a time comparison with a vectrized m-code: N=1000000 number of reference points Nq=100 number of query points dim=3 dimension of points k=3 number of neighbor tic [idc,dist]=BruteSearchMex(p ,qp , k ,k) MEX toc tic [idc,dist]=knnsearch(qp,p,k) VECTORIZED M-CODE toc p=rand(N,dim) qp=rand(Nq,dim) Output: Elapsed time is 0.962640 seconds. Elapsed time is 18.813100 seconds. )

说明：  该程序试图对具有31个城市的VRP进行求解，已知的最优解为784.1，我用该程序只能优化到810左右，应该是陷入局部最优，但我不知问题出在什么地方。请用过蚁群算法的高手指教。 蚁群算法的matlab源码，同时请指出为何不能优化到已知的最好解(The program attempts to have 31 cities of the VRP is solved, the optimal solution is known as 784.1, I use the program can only be optimized to about 810, should fall into local optimum, but I do not know where the problem is. Please teach master ant colony algorithm used. Ant colony matlab source, also please explain why not optimize the best solution to a known)

产生一个幅移键控（ASK）信号，具有正态分布的随机幅度。(have a rate-shift keying (ASK) signal is normally distributed random rate.)

基于otsu算法的图像分割算法实现，经过多次验证，程序无错误。(Based on Otsu algorithm for image segmentation algorithm, after repeated verification, error-free program.)

OSTBC 正交空时分组码多天线系统，QPSK，QAM调制的误码率比较

LAST one sample file

rake接收机性能的深入分析研究，主要是在CDMA中的应用(in-depth analysis of the rake receiver performance research, mainly in the CDMA Application)

gabor filter for music

利用matlab实现三次样条插值。包括实验报告和代码(use matlab to realize spline)

matlab实用程序，包括图形应用、界面设计、图形处理、数值分析等，希望大家喜欢(matlab practical procedures, including graphics applications, interface design, graphics processing, numerical analysis, I hope you like)