????? (2)

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. )

用CHM格式罗列了常用的MATLAB函数，便于在一时无法想起时，迅速查找函数(CHM format with a list of commonly used MATLAB functions, easy to remember the moment when you can not quickly find the function)

2014美赛相关MATLAB程序（基于NS模型）(about traffic flow)

带阻滤波程序，直接运行即可，保证可用。注意:目录的设置一定要正确(Band-stop filter program can be run directly, to ensure that available. Note: The directory must be correctly set)

一个简单正弦信号经过匹配滤波后计算SNR，并绘制时频域图片(Calculated a simple sinusoidal signal after matched filtering SNR, and draw the frequency domain picture)

it is used to improve the image quality

对想了解pc控制鼠标指针的源码的人有帮助，包括windows调用了那些函数，用了那些库文件等。(Would like to know the source pc control the mouse pointer to help people, including those functions called windows, with those library files.)

对确知信号进行抑制载波双边带双边带调制，然后进行快速傅里叶变换(Ascertain signal double sideband suppressed carrier double sideband modulation, and then performs fast Fourier transform)

本书用较少的数学知识阐明了小波分析的基本理论和应用。(wavelet)

可以实现直角坐标系下的牛顿拉夫逊算法，适合于潮流计算(Cartesian coordinate system can achieve the Newton Raphson method, suitable for power flow calculation)