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arXiv 1010.0535stat.ML
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支持向量机变体和其他正则化核方法的渐进正态性

Asymptotic Normality of Support Vector Machine Variants and Other Regularized Kernel Methods

Robert Hable

摘要:

在非参数分类和回归问题中,正则化核方法,特别是支持向量机,在理论和应用统计学中引起了广泛的关注。在抽象意义上,正则化核方法(这里简称为SVM)可以被看作是(通常是无限维)再生核希尔伯特空间中参数的正则化M-估计。对于光滑损失函数,证明了估计量之间的差异,即经验支持向量机和理论支持向量机是渐近正态的速率$\sqrt{n}$。也就是说,标准化差分在再生核希尔伯特空间中弱收敛到高斯过程。如在实际应用中常见的,正则化参数的选择可以取决于数据。证明是通过应用的功能δ-方法,并通过显示SVM功能是适当的阿达玛微分。

英文摘要:

In nonparametric classification and regression problems, regularized kernel methods, in particular support vector machines, attract much attention in theoretical and in applied statistics. In an abstract sense, regularized kernel methods (simply called SVMs here) can be seen as regularized M-estimators for a parameter in a (typically infinite dimensional) reproducing kernel Hilbert space. For smooth loss functions, it is shown that the difference between the estimator, i.e.\ the empirical SVM, and the theoretical SVM is asymptotically normal with rate $\sqrt{n}$. That is, the standardized difference converges weakly to a Gaussian process in the reproducing kernel Hilbert space. As common in real applications, the choice of the regularization parameter may depend on the data. The proof is done by an application of the functional delta-method and by showing that the SVM-functional is suitably Hadamard-differentiable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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