Refractive-index-difference

3D image visualization

QRS波群检测几中常用算法的比较，心电学习入门还不错~~(Compare hundreds of QRS complex detection algorithms commonly used in ECG learning portal is also good)

说明：  绝对节点坐标法matlab程序，针对大变形，大转角问题(Matlab program of absolute node coordinate method)

利用R的toepliz性质，是实数，则r也应该是实数，是实信号r(-m)=r(m)(Toepliz the nature of the use of R is real number, then r should be real, real signal r (-m) = r (m))

students learning code for practice

用共轭梯度算法——FR算法求解无约束最优化问题(Conjugate gradient algorithm- FR algorithm for solving unconstrained optimization problems)

模糊PID控制，改进了Pid控制的缺点，结合模糊控制理论，具有更好的控制效果(Fuzzy PID control, and improve the shortcomings of a Pid Control)

说明：  AWGN和瑞丽信道的仿真程序，很不错，希望对大家有帮助(simulation for AWGN and RayLey channel，hope it s helpful!)

matlab differerntial evolution

1 通过实验，掌握多元正态分布的最大似然估计； 2 掌握多元正态分布下的最小错误率的贝叶斯分类； 3 对其他的参数估计有更深的认识。 (1 experiment, master multivariate normal distribution maximum likelihood estimation 2 multivariate normal distribution under the minimum control error rate Bayesian classifier 3 on the other have a better understanding of parameter estimation.)