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Some matlab functions explaining basic operations

说明：  给予神经网络RB发的MATLAB曲线拟合(Issued to give MATLAB neural network curve fitting RB)

基于matlab的图着色程序，算法为贪心算法，将节点按照度从大到小排序，排序后先给度大的着色。(The graph coloring program based on MATLAB algorithm, greedy algorithm, the node according to the degree from large to small order, ranking after the first to a large degree of coloring.)

用于描述几何非线性的程序，大变形，位移加载或者应力加载(A program used to describe geometric nonlinearity, large deformation, displacement loading, or stress loading)

Iterator that returns all immediate children of a given node.

speech processing methods

说明：  用级数PI/4 = 1 -1/3 + 1/5 -1/7+…求PI的近似值，要求取前1000项来计算。(With a series PI/4 = 1-1/3+ 1/5-1/7+ ... seeking an approximation of PI, demanded before the 1000 data.)

基于变尺度随机共振的微弱信号检测方法，给出仿真程序(A weak signal detection method for stochastic resonance)

简要的Gauss列主元消去法，很实用，用matlab实现，还有一个图例，程序说明很详细(brief Gauss main-element elimination, very practical, using Matlab to achieve, there is a legend, a very detailed description of the procedures)

该代码是对人脸进行光照处理，先进行gamma变换，然后进行Dog双边滤波，然后进行灰度亮度的均衡。该方法能够有效提高光照变化的情况下的系统识别性能(The code is the human face of light treatment, the first for gamma conversion, and then Dog bilateral filtering, then the brightness of the gray balance. The method can effectively improve the illumination changes in the case of system identification performance)