利用权重进行特征选择 rat_wang_lamda

一个matlab的表面轮廓滤波程序，以圆度为实例(a Matlab surface contour filtering process to the examples of roundness)

calssification algorithmqq

比较了几种经典的LMS自适应滤波算法，很清楚地看出在低信噪比下各算法的性能( It compared several classical LMS adaptive filtering algorithm,)

Matlab code of bit error rate with bpsk modulation

ROC curves illustrate performance on a binary classification problem where classification is based on simply thresholding a set of scores at varying levels. Lenient thresholds give high sensitivity but low specificity, strict thresholds give high specificity but low sensitivity the ROC curve plots this trade-off over a range of thresholds (usually with sens vs 1-spec, but I prefer sens vs spec this code gives you the option). It is theoretically possible to operate anywhere on the convex hull of an ROC curve, so this is plotted too. The area under the curve (AUC) for a ROC plot is a measure of overall accuracy, and the area under the ROCCH is a kind of upper bound on what might be achievable with a weighted combination of differently thresholded results from the given classifier

说明：  计DFT，IDFT,FFT,循环卷积，循环移位以及重叠保留法(Of DFT, IDFT, FFT, cyclic convolution, cyclic shift and overlap to retain the Law)

复杂网络中，度分布计算，函数，并绘制出度分布的分布图(Complex networks, distributed computing degree, function, and mapping the distribution of out-degree distribution)

说明：  这是用matlab编的burg算法和lenvinson算法，用来估计信号的功率谱。(This is a series of burg with matlab algorithms and lenvinson algorithm used to estimate the signal power spectrum.)

用于comsol和matlab直接的二次开发(For comsol and matlab direct secondary development)

有井曲线作为输入可计算其地震波的衰减,针对EMD方法的不足,分析了该信号的时域、频域、倒谱，循环谱等。( There is a well attenuation curve as input to calculate its seismic waves, For lack of EMD, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc.)