Robust support vector machine for high-dimensional imbalanced data

Robust support vector machine for high-dimensional imbalanced data
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高维不平衡数据的鲁棒支持向量机

DOI:
10.1080/03610918.2019.1586922
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发表时间:
2019
期刊:
Communications in Statistics - Simulation and Computation
影响因子:
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通讯作者:
Nakayama Yugo
Nakayama Yugo
中科院分区:
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文献类型:
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作者:
佐藤彰典;角田圭輔;水山遼;七五三木聡;辻井敦大;Nakayama Yugo

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在本文中,我们考虑支持向量机(SVM)在高维、低样本量(HDLSS)设置中的渐近特性。特别是,我们研究了正则化参数 C 的软边缘 SVM 的行为。我们表明 SVM 无法处理不平衡分类,并且 SVM 在 HDLSS 设置中非常有偏差。为了克服这些困难,我们提出了一种鲁棒的支持向量机(RSVM)。我们表明 RSVM 在 HDLSS 设置中具有更好的性能。最后,我们检查RSVM在实际数据分析中的性能。
In this paper, we consider asymptotic properties of support vector machine (SVM) in high-dimension, low-sample-size (HDLSS) settings. In particular, we investigate the behavior of soft-margin SVM for the regularization parameterC. We show that SVM cannot handle imbalanced classification and SVM is very biased in HDLSS settings. In order to overcome such difficulties, we propose a robust SVM (RSVM). We show that RSVM gives preferable performances in HDLSS settings. Finally, we check the performance of RSVM in actual data analyses.