hw4problem2

LSB隐写算法中的随机数生成函数，和大家一起分享，欢迎下载(Generating function of random number in LSB steganography algorithms)

说明：  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.)

第10章 非线性方程组求解.zip。是从书中光盘里直接拷贝的代码，放在这里，与大家共享，共同交流，希望对大家有帮助。(Chapter 10 of the nonlinear equations)

this code is a simple one_seeded region growing to segment the bones in MRI prostate images.

混沌动力学实例仿真，采用MATLB可以用作研究动力学学习使用(Chaotic dynamics simulation using MATLB can be used to study learning dynamics)

MATLAB距离方向滤波器仿真实现（ddf）。(MATLAB simulation of the realization of directional-distance filters)

说明：  利用BP神经网络进行字符识别的系统源码，能进行有效数字字符识别。(BP neural network Character Recognition system source code, can be effective digital character recognition.)

可以实现FFT变化的时域图分析，可以清楚的知晓信号随时间的规律变化(Changes can achieve FFT time domain analysis, the signal can be clearly aware of the law change with time)

Windows下的ICMP封装(Clcmp class which can echo)

本程序适用于论文A Cyclic Weighted Median Method for L1 Low-Rank Matrix Factorization with Missing Entries(this code is for A Cyclic Weighted Median Method for L1 Low-Rank Matrix Factorization with Missing Entries)