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@polynomial
VC维理论和结构风险最小化准则是统计学习理论中的重要内容,基于这一理论的支持向量机算法由于具有好的泛化性能受到重视,并被研究用于文本分类问题.基于多项式核的研究工作认为SVM的泛化能力不受多项式阶数的影响,并且能够处理很高维的分类问题,用于文本分类无需进行特征选择.研究发现,随着多项式核阶数的升高,SVM文本分类器会出现过学习现象,并且特征数越多越明显,特征选择是必需的.通过估计函数集的VC维,基于结构风险最小化理论对此问题进行分析,得出的结论跟实验结果相符.
(err)
- 2008-01-08 21:41:08下载
- 积分:1
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rake
实现CDMA系统的RAKE接收,比较最大比合并、等增益合并、、选择合并接收算法的性能,采用3条多径,每条多径之间延迟半个码片,信源输入采用16位WALSH码扩频(Realize RAKE receiver CDMA system to compare maximal-ratio combining, and so gain the merger, and select to receive the combined algorithm, using more than three tracks, each multi-path delay between the half-chip, input source code using 16 WALSH Spread Spectrum)
- 2008-05-26 22:27:15下载
- 积分:1
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fftspectrum
傅里叶变换与频谱分析的matlab代码,用于时间序列分析。(matlab code for FFT and PSD)
- 2014-12-16 14:13:08下载
- 积分:1
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RLS_lichunhua1
RLS、LMS、LLMS算法实现系统预测(RLS, LMS, LLMS system prediction algorithm)
- 2012-11-28 18:03:24下载
- 积分:1
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downupSampling_byFactor2
图像2倍上采样和下采样,快速且准确,成像效果较好。(Photo 2 times upsampling and downsampling, fast and accurate.)
- 2012-11-24 20:40:34下载
- 积分:1
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DMC的matlab实现
说明: dmc的matlab实现方法,运行实现过程正常,中间有一部分注释(matlab code of dmc which have been tested for many times)
- 2019-03-28 13:38:39下载
- 积分:1
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matlab平差程序设计
说明: 使用Matlab实现水准网平差,建立caculateH0,getBegin,getH0,getV,h0k,isContr和nameToindex函数实现水准网平差,并进行精度分析。(Establish caculateh0, getbegin, geth0, getv, h0k, iscontr and nametoindex functions to realize leveling network adjustment, and analyze the accuracy.)
- 2020-10-13 16:05:46下载
- 积分:1
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emd综合
说明: 经验模态分解(Empirical Mode Decomposition,简称EMD))方法被认为是2000年来以傅立叶变换为基础的线性和稳态频谱分析的一个重大突破,该方法是依据数据自身的时间尺度特征来进行信号分解,无须预先设定任何基函数。这一点与建立在先验性的谐波基函数和小波基函数上的傅里叶分解与小波分解方法具有本质性的差别。(Empirical mode decomposition (EMD) method is considered as a major breakthrough in linear and steady-state spectrum analysis based on Fourier transform since 2000. This method decomposes signals according to the time scale characteristics of the data itself, without setting any basis function in advance. This is essentially different from Fourier decomposition and wavelet decomposition based on prior harmonic basis function and wavelet basis function.)
- 2020-10-22 12:01:28下载
- 积分:1
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27796723lzw-hafuman
在matI ab中模拟c中链表,利用复数运算,
联系具体字符和概率,每次找到最小概率的
两个字符对应的蝙号,依次记录下来,最后
根据奇偶码的不同实现Huffman蝙码。本算法
新颖独特, 易于理解、蝙程。(Simulate in matI ab c in the list, using complex operation, contact the specific character and the probability to find the minimum probability for each of the two characters corresponding to bat number, followed by record, last achieved according to the different parity code Huffman bat code. This algorithm is novel and unique, easy to understand, bat-way.)
- 2010-06-28 01:49:27下载
- 积分:1
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BLOCK-DIAGRAM
gallstone segmentation and classification by kumares
- 2015-02-06 19:54:49下载
- 积分:1