BP神经网络+最小距离分类器

二级省和城市二级省和城市二级省和城市..(Two provinces and two cities in two provinces and cities in provinces and cities ..)

matlab课件（华中科技大学电气与电子工程学院应用电子工程系版）(matlab Courseware (Huazhong University of Science and Technology College of Electrical and Electronic Engineering, Electronic Engineering Science))

里面包含了混沌系统中常用的类型，基本能满足仿真需求，在此基础上可以进行少量修改以实现相应功能，对于论文写作有非常大的帮助(Chaos toolbox, very easy to use to provide function interface, simply call can)

Newton method.......this is a matlab code which solves a nonlinear function by newton-raphson method

南极三维坐标转换算法,三维平面坐标系到极方位等角坐标系(3d coordinate system transform of antarctic)

qr factorization using hh algorithm colum pivioting

主成分回归，可以提出自变量的影响。用MATLAB编写，运行通过。(Principal component regression, we can make the impact of independent variables. Using MATLAB, run through.)

采用MATLAB语言编译的数值微分函数，希望对大家有用(numerical differentiation)

用matlab编写的用于转子动力学分析的有限元程序，可实现转子临界转速和振型分析、稳态响应和瞬态响应分析等功能。()

nearestSPD works on any matrix, and it is reasonably fast. As a test, randn generates a matrix that is not symmetric nor is it at all positive definite in general.