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是学习PCA特征提取的很好的学习资料，能量熵的计算，对于初学matlab的同学会有帮助。( Is a good learning materials to learn PCA feature extraction, Energy entropy calculation, Matlab for beginner students will help.)

已知日期，计算出星期几的程序.以过测试。计算正确。请放心使用。(Caculate Weekday)

说明：  fortran 90 numerical recipes

说明：  通过三个点坐标，求出圆心坐标。C#代码，主要是算法。(Through the coordinates of three points, the coordinates of the center of the circle are obtained.)

说明：  通过模型决定系数完成支持向量机参数优化，并建立基于大数据的支持向量机模型实现回归拟合(The parameters of SVM are optimized by the coefficient determined by the model, and the regression fitting is realized by the support vector machine model based on big data)

生物反馈模拟，对米氏方程进行计算，并作出模拟图(a simulation for feedback)

说明：  拓扑优化MMA算法从空间的一个初始设计点出发，沿着某个搜索方向以适当步长的迭代格式 ，实现对设计变量的修改，以获得的值。(Starting from an initial design point in space, the topology optimization MMA algorithm modifies the design variables in an appropriate iterative format along a certain search direction to obtain the optimal value)

最小二乘法求超定线性方程组得C＋＋模板，还包括矩阵求逆，矩阵乘法等小函数(Overdetermined least-squares method of linear equations have to C templates, also includes matrix inversion, matrix multiplication, such as small function)

清华大学《数值分析A》－第02章.插值 Lagrange Newton Hermite 三次样条(Tsinghua University, )

ICP迭代最近点算法的各种实现方法，包括四元函数法，最小迭代，等算法，以及ICP迭代最近点算法的实现。(ICP iterative closest point algorithm implementation, including the four-function method, the minimum iteration algorithm, and ICP iterative closest point algorithm.)