complex-network

EM算法在神经网络中的应用，可以用来进行视频数据分类。(In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve recently derived, to train a two-layer perceptron, so as to classify medical data (kindly provided by Steve Roberts and Will Penny from EE, Imperial College). The data and simulations are described in: Nando de Freitas, Mahesan Niranjan and Andrew Gee Nonlinear State Space Estimation with Neural Networks and the EM algorithm After downloading the file, type "tar-xf EMdemo.tar" to uncompress it. This creates the directory EMdemo containing the required m files. Go to this directory, load matlab5 and type "EMtremor". The figures will then show you the simulation results, including ROC curves, likelihood plots, decision boundaries with error bars, etc. WARNING: Do make sure that you monitor the log-likelihood and check that it is increasing. Due to numerical errors, it might show glitches for some data sets.)

人脸识别基于主成分分析（PCA）的matlab实现，附带部分注释。(PCA achieve recognition)

说明：  改进的Alamouti STBC，2*2 相关信道,运行通过。(improved Alamouti STBC，2*2 correlation channel,possible to run.)

MVDR算法的频率谱估计 包含1个目标信号和2个干扰信号(Frequency Spectrum Estimation of MVDR Algorithm Contains one target signal and two interference signals)

实现zoomfft 经仿真6.5可用 本例只是zoomfft函数，没有数据(zoomfft)

用Matlab中的下列函数对输入图像按实验内容进行运算；感受各种不同的图像处理方法对最终图像效果的影响。 imfilter；fspecial；imadjust；imadd；immultiply (With the following Matlab function of the input image by computing the experimental content experience a variety of image processing methods on the impact of the final image. imfilter fspecial imadjust imadd immultiply)

this code first reads an image and decomposed it in discrete wavelet transformation.hl1 and hl2 are extracted to embed watermark. watermark is added to hl1 and lh1 and inverse dwt is applied.

高斯低通，高斯高通滤波器。matlab实现，用于图像平滑处理，去噪，和锐化。(gaosi，filter。)

MATLAB DEMO ENTITY ED EVENTS

说明：  推导雷达方程，建模计算美国的预警机雷达对大型战斗机的最大发现距离。雷达建模包括天线方向图、扫描调制（天线方向图的扫描调制）等，同时考虑不同脉冲积累数(Derive the radar equations, model and calculate the maximum discovery distance of the US early warning aircraft radar for large fighters. Radar modeling includes antenna pattern, scanning modulation (scanning modulation of antenna pattern), etc., while considering different pulse accumulation numbers)