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@smosvctutor
非平衡数据集的分类问题经常出现在许多实际应用中.支持向量机在处理这一类问题时,整体分类性能比较低.为此,Veropoulos提出的采用不同惩罚系数的改进算法可以较好的解决此类问题.此外,可以利用序列最小优化算法简单快速的解决上述优化问题.(Non-equilibrium data sets classification problems often appear in many practical applications. Support Vector Machine in dealing with this type of issue, the overall classification performance is relatively low. To this end, Veropoulos proposed punishment coefficient using different algorithms can improve the better solution such issues. In addition, can use the Sequential Minimal Optimization algorithm is simple and fast solution to the above optimization problem.)
- 2008-01-08 21:43:04下载
- 积分：1
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CT_recon
平行束CT重建算法，基于MatLAB语言。(Parallel-beam CT reconstruction algorithm,based on the language MatLAB.)
- 2009-04-09 13:28:07下载
- 积分：1
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LASSOaLARSa-SPCA
Abstract There are a number of interesting variable selection methods available beside the regular forward selection and stepwise selection methods. Such approaches include LASSO (Least Absolute Shrinkage and Selection Operator), least angle regression (LARS) and elastic net (LARS-EN) regression. There also exists a method for calculating principal components with sparse loadings. This software package contains Matlab implementations of these functions. The standard implementations of these functions are available as add-on packages in S-Plus and R.
Keywords LASSO, LARS, SPCA, Matlab, Elastic Net, Sparse, Sparsity, Variable selection
- 2013-10-28 22:36:21下载
- 积分：1
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huff
To calculate huffman in information theory.
- 2014-01-27 12:11:29下载
- 积分：1
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porous
porous多孔介质LBM，matlab模拟(porous porous medium LBM, matlab simulation)
- 2013-12-17 14:56:55下载
- 积分：1
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13247063Wedgelet
The fusion of high-spectral/low-spatial resolution
multispectral and low-spectral/high-spatial resolution panchromatic
satellite images is a very useful technique in various
applications of remote sensing. Recently, some studies showed
that a wavelet-based image fusion method provides high quality
spectral content in fused images. However, most wavelet-based
methods yield fused results with spatial resolution that is less
than that obtained via the Brovey, IHS, and PCA fusion methods.
In this paper, we introduce a new method based on a curvelet
transform, which represents edges better than wavelets. Since
edges play a fundamental role in image representation, one
effective means to enhance spatial resolution is to enhance the
edges. The curvelet-based image fusion method provides richer
information in the spatial and spectral domains simultaneously.
We performed Landsat ETM+ image fusion and found that the
proposed method provides optimum fusion results.
- 2015-04-08 15:47:47下载
- 积分：1
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GoldsequenceCDMAsimulation
写一个MATLAB程序，实现4个时间同步的CDMA用户的仿真，其中每个用户都使用长度为L=31的不同的Gold序列。每个用户都采用它们代表的Gold序列的二进制（+-1）调制。每个用户的接收端将这个复合的CDMA接收信号相关，而这个复合的信号都在它们各自的序列上受到AWGN的污损（基于按码片相加）。在N=10000信息比特下，仿真估值并画出作为SNR的函数的CDMA通信系统的差错概率。(Write a MATLAB program, the realization of the four time synchronization of the simulation of CDMA users, including the length of each user for use of the L = 31 different Gold sequences. They are used for each user on behalf of the Gold sequence of binary (+-1) modulation. Each user' s receiver will receive the composite CDMA signal, and this composite signal in the sequence of their respective defaced by the AWGN (additive based on the chip by). Information in the N = 10000 bits, the simulation value and draw as a function of SNR of the CDMA communication system the probability of error.)
- 2009-06-08 11:46:23下载
- 积分：1
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leida2Kalman
Kalman滤波跟踪目标运行时需添加数据，并修改路径(Kalman filter tracking target runtime needs to add data, and modify the path
)
- 2014-11-15 11:47:18下载
- 积分：1
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MeanShiftCluster
使用mean-shift(均值漂移)，进行聚类-matlab(Mean-Shift-Cluster using matlab)
- 2010-11-14 23:09:38下载
- 积分：1
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xinhao
应用matlab应用平台信号采集程序设计与整理。(Application matlab application platform signal acquisition program design and finishing.)
- 2008-05-20 13:33:02下载
- 积分：1
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