fdcorr

信号y=sin(2*pi*f1*t)+sin(2*pi*f2*t)加上信噪比为2高斯白噪声的傅里叶变换，分别画出时域和频域图(Signal y = sin (2* pi* f1* t)+ sin (2* pi* f2* t) plus noise ratio for two Gaussian white noise of the Fourier transform, respectively, to draw the time domain and frequency domain)

EM 算法是Dempster，Laind，Rubin于1977年提出的求参数极大似然估计的一种方法，它可以从非完整数据集中对参数进行 MLE估计，是一种非常简单实用的学习算法。这种方法可以广泛地应用于处理缺损数据、截尾数据以及带有噪声等所谓的不完全数据，可以具体来说，我们可以利用EM算法来填充样本中的缺失数据、发现隐藏变量的值、估计HMM中的参数、估计有限混合分布中的参数以及可以进行无监督聚类等等。(EM algorithm is a method for maximum likelihood estimation of parameters proposed by Dempster, Laind and Rubin in 1977. It can estimate parameters from incomplete data sets by MLE. It is a very simple and practical learning algorithm. This method can be widely used in dealing with the so-called incomplete data such as defective data, censored data and noisy data. Specifically, we can use EM algorithm to fill missing data in samples, find hidden variable values, estimate parameters in HMM, estimate parameters in finite mixed distribution, and so on. Unsupervised clustering and so on.)

说明：  matlab最优控制的作业 请各位高手多多指教(Matlab optimal control operations please master exhibitions)

高斯消去法，用Matlab实现的。显然没有matlab自带的算法好，所以是练习以及和其他算法比较用的。(Gaussian elimination method, implemented with Matlab. Obviously there is no algorithm matlab own good, so is the practice and compare with other algorithms used.)

单级倒立摆的智能控制以及实验研究 提供了较好的实验方案以及结果(Inverted Pendulum on Intelligent Control and experimental studies provide good experimental program and results)

基于matlab的灰色模型实现，包括残差的精度分析，原创(Gray model based on matlab, including the accuracy of analysis of the residuals, the original)

我们可以运用这个程序来计算信息论中的一个算法度量，度量数列互信息的大小(we can use it to calculate the multi-information)

用监督参数估计中的贝叶斯方法估计条件概率密度的参数u(With the supervision of the Bayesian estimation method to estimate the parameters of the conditional probability density of u)

本教程提供了使用MATLAB的实践性指导，它基于MATLAB6.0版，内容由浅入深，特别是本书对每一条命令的使用格式都作了详细而又简单明了的全英文说明(This tutorial provides a practical guide to using MATLAB, which is based MATLAB6.0 version of the content digest, especially for the book using the format of each command are detailed yet simple and clear instructions in English)

说明：  audio Task 2 by me and friends