高维部分线性支持向量机的学习率
Learning rates for partially linear support vector machine in high dimensions
摘要:
分析了高维部分线性支持向量机的一种新的正则化学习方法。所提出的方法包括一个经验风险和拉索型惩罚的线性部分,以及标准的非线性部分的功能范数。在这里,线性核用于模型解释和特征选择,而非线性核被采用,以提高算法的灵活性。本文对加权经验过程进行了一种新的技术分析,并在正则化条件下建立了半参数估计的锐学习率。特别地,我们导出的半参数SVM的学习率不仅依赖于样本量和函数的复杂度,而且还依赖于稀疏性和间隔参数。
英文摘要:
This paper analyzes a new regularized learning scheme for high dimensional partially linear support vector machine. The proposed approach consists of an empirical risk and the Lasso-type penalty for linear part, as well as the standard functional norm for nonlinear part. Here the linear kernel is used for model interpretation and feature selection, while the nonlinear kernel is adopted to enhance algorithmic flexibility. In this paper, we develop a new technical analysis on the weighted empirical process, and establish the sharp learning rates for the semi-parametric estimator under the regularized conditions. Specially, our derived learning rates for semi-parametric SVM depend on not only the sample size and the functional complexity, but also the sparsity and the margin parameters.
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