期刊
COMPUTATIONAL STATISTICS & DATA ANALYSIS
卷 77, 期 -, 页码 371-382出版社
ELSEVIER
DOI: 10.1016/j.csda.2014.03.016
关键词
Robust regression; nu-tube support vector regression; Asymmetric loss; Quantile regression
资金
- Flemish Government
- Research Council KUL [GOA/11/05, GOA/10/09, CoE EF/05/006, IOE-SCORES4CHEM]
- Flemish Government: FWO [G0226.06, G.0302.07, G.0320.08, G.0558.08, G.0557.08, G.0588.09, G.0377.09, G.0377.12]
- IWT
- Eureka-Flite+
- SBO LeCoPro
- SBO Climaqs
- SBO POM
- OO-Dsquare
- Belgian Federal Science Policy Office: IUAP P6/04 (DYSCO, Dynamical systems, control and optimization)
- iMinds
- EU: ERNSI
- ERC AdG A-DATADRIVE-B, FP7-HD-MPC [INFSO-ICT-223854]
- COST intelliCIS, FP7-EMBOCON [ICT-248940]
- Contract Research: AMINAL
- Helmholtz: viCERP, ACCM, Bauknecht, Hoerbiger
- National Natural Science Foundation of China [11201079]
- Fundamental Research Funds for the Central Universities of China [20520133238, 20520131169]
Finding a tube of small width that covers a certain percentage of the training data samples is a robust way to estimate a location: the values of the data samples falling outside the tube have no direct influence on the estimate. The well-known nu-tube Support Vector Regression (nu-SVR) is an effective method for implementing this idea in the context of covariates. However, the nu-SVR considers only one possible location of this tube: it imposes that the amount of data samples above and below the tube are equal. The method is generalized such that those outliers can be divided asymmetrically over both regions. This extension gives an effective way to deal with skewed noise in regression problems. Numerical experiments illustrate the computational efficacy of this extension to the nu-SVR. (C) 2014 Elsevier B.V. All rights reserved.
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