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lle
Locally-Linear Embedding (LLE)[9] was presented at approximately the same time as Isomap. It has several advantages over Isomap, including faster optimization when implemented to take advantage of sparse matrix algorithms, and better results with many problems. LLE also begins by finding a set of the nearest neighbors of each point. It then computes a set of weights for each point that best describe the point as a linear combination of its neighbors. Finally, it uses an eigenvector-based optimization technique to find the low-dimensional embedding of points, such that each point is still described with the same linear combination of its neighbors. LLE tends to handle non-uniform sample densities poorly because there is no fixed unit to prevent the weights from drifting as various regions differ in sample densities. LLE has no internal model.
- 2011-01-23 02:12:31下载
- 积分:1
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1
说明: 图像及其预测误差图像78维特征提取,用于图像识别(Image Its prediction error image 78 dimensional feature extraction)
- 2010-04-29 21:31:12下载
- 积分:1
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FEM1
Solving a 2D scattering problem using FEM
- 2013-02-25 12:41:08下载
- 积分:1
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B
2013数学建模研究生B题建立多项式模型代码(2013 graduate of mathematical modeling to establish polynomial model code B title)
- 2013-09-21 08:50:53下载
- 积分:1
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power_dstatcom_pwm
为一个配电网,静态无功发生器的仿真模型,可以进行无功补偿调节电压(A distribution network, static var generator simulation model can regulate voltage reactive power compensation)
- 2020-06-26 20:40:01下载
- 积分:1
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signal_xc
说明: 改程序用于在实验中所测量的振动、噪声、水声以及数值模拟监测所得到的信号,实现信号的自相关分析。(The modified program is used to measure the vibration, noise, underwater sound and the signal obtained from the numerical simulation monitoring in the experiment to realize the autocorrelation analysis of the signal.)
- 2020-02-06 12:16:06下载
- 积分:1
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jiafa
虽然简单,但是给我很大的启发,下载了绝对不会吃亏的,放心下吧(though easy, it taught me a lot)
- 2010-03-02 15:13:27下载
- 积分:1
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autocorr
Autocorrelation Function - Matlab - Useful Econometrics Tool
- 2014-01-04 02:12:57下载
- 积分:1
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kanong
本段matlab程序主要是娱乐性质的,功能是用这些代码运行后会有演奏卡农的效果,非常的神奇,时候MATLAB高手研究。(This paragraph matlab program of entertainment nature, functions will be played after the code is running Canon is very magical, when MATLAB master research.)
- 2012-05-23 22:12:29下载
- 积分:1
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db4
用DB4小波进行多尺度分解,分解级数为6层的降噪程序(DB4 Wavelets )
- 2010-06-03 22:35:47下载
- 积分:1