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PCA算法程序 pca
PCA算法程序设计步骤:
1、去均值
2、计算协方差矩阵及其特征值和特征向量
3、计算协方差矩阵的特征值大于阈值的个数
4、降序排列特征值
5、去掉较小的特征值
6、去掉较大的特征值(一般没有这一步)
7、合并选择的特征值
8、选择相应的特征值和特征向量
9、计算白化矩阵
10、提取主分量
(PCA algorithm programming steps: 1 to mean 2, calculation of covariance matrix and its eigenvalues and eigenvectors 3, the calculation of covariance matrix eigenvalues greater than the threshold number of 4, in descending order of eigenvalue 5, remove the smaller eigenvalue 6, remove the larger eigenvalue (usually not this step) 7, the combined choice of eigenvalues 8, select the appropriate eigenvalues and eigenvectors 9, computing whitening matrix 10, principal component extraction)
- 2021-03-09 13:09:27下载
- 积分:1
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giumiu_v41
wolf 方法计算李雅普诺夫指数,用于时频分析算法,旋转机械二维全息谱计算的实用例程。( wolf calculated Lyapunov exponent, For time-frequency analysis algorithm, Rotating Machinery dimensional hologram of practical spectrum calculation routines.)
- 2017-02-28 13:53:12下载
- 积分:1
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生活垃圾转运站选址lingo 求解编程
二级转运站选址数学规划模型求解的lingo 程序(Lingo Program for Solving Mathematical Programming Model of Secondary Transfer Station Location)
- 2020-06-16 14:20:01下载
- 积分:1
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bubble-dynamic-mesh
气泡根据内外压力差变化的动网格。。。。。。(bubble dynamic mesh )
- 2014-02-10 15:52:37下载
- 积分:1
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Laguerre-fitting
基于Laguerre多项式的拟合程序,可以控制多项式的结束,以及变量alpha。(Based on Laguerre polynomial fitting procedure, you can control the end of polynomials, and variable alpha.)
- 2014-01-02 21:43:58下载
- 积分:1
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共炮点地震波正演,其中、包括了直达波,反射波,折射波common-points-forward-
共炮点地震波正演,其中、包括了直达波,反射波,折射波(Common shot point synthesis of reflected wave records)
- 2012-05-22 15:57:43下载
- 积分:1
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FDTD
西安电子科技大学葛德彪教授书后所附fortran程序(Xidian University, Professor Ge Debiao book accompanying fortran program)
- 2020-07-03 18:20:02下载
- 积分:1
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Roe1
计算流体力学经典程序Roe格式,每步有说明,适合初学者(Computational Fluid Dynamics classical procedures Roe scheme, each step is described, suitable for beginners)
- 2020-08-18 10:28:21下载
- 积分:1
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beijou_v28
FMCW调频连续波雷达的测距测角,窗函数法设计一个数字带通FIR滤波器,详细画出了时域和频域的相关图。( FMCW frequency modulated continuous wave radar range and angula)
- 2016-09-14 13:46:53下载
- 积分:1
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时间序列
利用MATLAB程序实现时间序列的预测功能(Using MATLAB program to achieve prediction function of time series.)
- 2018-04-17 15:00:34下载
- 积分:1