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Computational-Science-codes
开发环境没有可选项,fortran90,Fortran_90_and_Computational_Science-_codes(Computational Science codes by fortran90
)
- 2013-10-10 17:07:12下载
- 积分:1
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shape_feature
一个简单的傅立叶带亮度描绘子提取图像的形状特征程序(A simple Fourier descriptor with the brightness of the image shape feature extraction procedures)
- 2008-12-21 21:36:16下载
- 积分:1
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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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xiaobobao_3lev
用于处理信号,对信号进行小波包分解,此处进行了三层分解计算,可以进行迭代。(Used to process the signal, the wavelet packet decomposition of the signal, where the three-tier decomposition of the calculation can be iterated.)
- 2017-05-11 14:16:17下载
- 积分:1
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energy-leakage--dual-tree
首先根据高斯白噪声频率充满整个频带的特性,通过双树复小波包变换对高斯白噪声进行分解,利用频带能量泄漏的定量分析方法,验证了双树复小波包变换具有较低的频带能量泄漏特性;其次利用双树复小波包变换逐层分解信号,对每层分解所得分量求其FFT谱的峭度,得到基于双树复小波包变换的谱峭度图,根据图中峭度最大的原则,可以自动准确的选择信号分解最佳层数和最佳分量;最后将基于双树复小波包变换的谱峭度图的故障诊断方法应用于实际工程中,对齿轮故障振动信号进行分析,选择最佳分解层数和分量后利用希尔伯特包络解调,有效准确地提取了故障特征信息,验证了方法的可行性和有效性(The parameters of a filter were determined by experience, and that has a great influence on the
results of signal processing. The discrete wavelet packet transform has a larger energy leakage of frequency band,
which obviously affected the results of the envelope demodulation. It is necessary to have a method with a lower
energy leakage of the frequency band before envelope demodulation. The dual tree complex wavelet packet
transform (DT-CWPT) was a new signal processing method that had many good qualities. Because the energy
leakage of the frequency band was smaller when the signal was decomposed by a dual tree complex wavelet
packet transform, the dual tree complex wavelet packet transform was used to extract the fault feature information
in the field of fault diagnosis. In this paper, first, according to the characteristics of Gaussian white noise, whose
frequency was full of the whole frequency band, Gaussian white noise was decomposed by a dual-tree complex
wavel)
- 2014-05-28 17:13:41下载
- 积分:1
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matlab-for-maximum-entropy
用于利用最大熵法求解数据资料服从的分布类型。并应用最小二乘法求解模型以得到最优解(Using the maximum entropy method for solving the data distribution type of obedience. And apply the least squares method to obtain the optimal solution to solve the model)
- 2021-04-01 17:19:08下载
- 积分:1
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cvf_rter
Compaq Visual Fortran Error Messages,对于利用CVF编程的programmer是本很好的对照手册。(Compaq Visual Fortran Error Messages, programming, programmer for the use of CVF is a very good control of the manual.)
- 2011-05-23 11:52:50下载
- 积分:1
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MATLAB
最小二乘法在二维平面测向交叉定位里的应用(The least squares method in the two-dimensional plane measured to cross positioning)
- 2021-04-16 11:48:54下载
- 积分:1
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GetMV2
一个简单的计算块的运动矢量源码,使用四步搜索算法(A simple calculation of the block motion vector source, use the four-step search algorithm)
- 2008-03-14 09:53:46下载
- 积分:1
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wtls
加权总体最小二乘matlab工具箱,包含各种总体最小二乘算法的源代码(weighted total least squares toolbox)
- 2020-09-11 16:08:01下载
- 积分:1