政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/118191

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政大機構典藏 > 商學院 > 統計學系 > 期刊論文 > Item 140.119/118191

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题名:	Dimension Reduction of High-Dimensional Datasets Based on Stepwise SVM
作者:	周珮婷 Chou, Elizabeth P. Ko, Tzu-Wei
贡献者:	統計系
日期:	2017-11
上传时间:	2018-07-03 15:05:09 (UTC+8)
摘要:	The current study proposes a dimension reduction method, stepwise support vector machine (SVM), to reduce the dimensions of large p small n datasets. The proposed method is compared with other dimension reduction methods, namely, the Pearson product difference correlation coefficient (PCCs), recursive feature elimination based on random forest (RF-RFE), and principal component analysis (PCA), by using five gene expression datasets. Additionally, the prediction performance of the variables selected by our method is evaluated. The study found that stepwise SVM can effectively select the important variables and achieve good prediction performance. Moreover, the predictions of stepwise SVM for reduced datasets was better than those for the unreduced datasets. The performance of stepwise SVM was more stable than that of PCA and RF-RFE, but the performance difference with respect to PCCs was minimal. It is necessary to reduce the dimensions of large p small n datasets. We believe that stepwise SVM can effectively eliminate noise in data and improve the prediction accuracy in any large p small n dataset.
關聯:	arXiv:1711.03346v1
数据类型:	article
显示于类别:	[統計學系] 期刊論文

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