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豪斯霍尔德QR分解及回代MATLAB代码，并用该方法解决线性方程组的实例(Howard Hopper QR decomposition and back substitution de MATLAB code, and use this solution to an instance of linear equations)

The codes of Agrawal Book Nonlinear Fiber Optics .

Directory of useful Bayesian VAR Analysis material

math book about quants

关于viterbi编码的，信道编码相关程序，适用(viterbi_decoder2_p)

利用3*3模版实现对图像的膨胀,是比较基础的图像膨胀的算法(The use of 3* 3 stencil of the image to achieve the expansion, is the basis of comparison of image expansion algorithm)

金钱豹matlab测试设计方法 打开金钱豹 —》 设置—》交易模型设置（同时，打开安装目录中matlabfiles文件夹，如果不存在，就解压对应的压缩文件matlabfiles ）—》阅读其中的matlab程序(现有两个较为简单的示例策略） —》（假设我们要测试日内一分钟价差套利）—》选择接口类型matlab，添加模型名称，选择输入参数，选择输出参数，以及m文件路径—》以上步骤完成后按“修改",模型即转入—》打开测试品种的行情（IF1005，IF1006）——》转换成一分钟频率（按”分时/周期切换“或右键）——》选择模型—》对两个品种分别加装同一个模型matlab1 jiacha——》这个时候会自动生成当日价差图。(matlab1 jiacha)

介绍matlab的功能，使读者大致理解matlab(Introduction matlab function, so that readers generally understand Matlab)

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

Independent Component Analysis源代码,最大似然方法(Independent Component Analysis source code, the maximum likelihood method)