-
deriv
This function returns the numerical derivative of an analytic function.
Of special note, is the incorporation of the "complex stepderivative"approach which offers greatly improved derivative accuracy compared to approximations. This is especially germain when accuracy at the level of machine precision is a concern.
(Programming the finite element toolbox using matlb finite element toolbox, many examples for yourself as there is a very friendly interface, input parameters can be)
- 2010-12-26 14:19:33下载
- 积分:1
-
自适应算法
说明: matlab程序,用于计算时间序列中的自适应问题可以进行预测(Matlab procedures used in the calculation of time-series of adaptive problems can be predicted)
- 2005-10-30 16:49:41下载
- 积分:1
-
HWK_4
homework 4 given to me by my lecturer enjoy
- 2011-06-02 15:28:11下载
- 积分:1
-
main_1
matlab,书上例程,仅用作参考,用于数组的重复显示(matlab, books, routines, only as a reference for arrays of repeated)
- 2012-07-17 17:30:00下载
- 积分:1
-
michelsonContrast
michelson contrast function for quality assesment of image
- 2013-03-16 12:11:23下载
- 积分:1
-
sinorder
为sinudoidal模型的AIC阶估计.AIC信息准则即Akaike information criterion,是衡量统计模型拟合优良性的一种标准,又由于它为日本统计学家赤池弘次创立和发展的,因此又称赤池信息量准则。它建立在熵的概念基础上,可以权衡所估计模型的复杂度和此模型拟合数据的优良性。
在一般的情况下,AIC可以表示为: AIC=2k-2ln(L)
其中:k是参数的数量,L是似然函数。 假设条件是模型的误差服从独立正态分布。 让n为观察数,RSS为剩余平方和,那么AIC变为: AIC=2k+nln(RSS/n)
增加自由参数的数目提高了拟合的优良性,AIC鼓励数据拟合的优良性但是尽量避免出现过度拟合(Overfitting)的情况。所以优先考虑的模型应是AIC值最小的那一个。赤池信息准则的方法是寻找可以最好地解释数据但包含最少自由参数的模型。(AIC order estimation for sinudoidal model)
- 2013-12-05 13:18:54下载
- 积分:1
-
噪声中非平稳信号频谱分析
说明: 噪声中的非平稳信号的频谱分析的matlab代码(Matlab code for spectrum analysis of non-stationary signals in noise)
- 2019-05-27 09:20:22下载
- 积分:1
-
2-layers-simple-ANN
不调用MATLAB本身的神经网络工具箱实现两层神经网络(creat a simple two layers ANN without using the ANN toolbox of MATLAB )
- 2009-11-26 20:23:49下载
- 积分:1
-
chaoliu
电力网络的牛顿拉夫逊法潮流计算程序,方便移植、修改。(Newton Raphson power flow calculation procedure of the electricity network, to facilitate transplantation, modify.)
- 2013-04-09 08:56:05下载
- 积分:1
-
fuzzypartion
基于数量积方法求解矩阵的模糊相似关系、模糊等价关系。(Quantity plot method based on fuzzy similarity relation matrix, fuzzy equivalence relation.)
- 2009-02-24 14:00:42下载
- 积分:1