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Regression methods for high-dimensional multicollinear data

Aucott, Lorna S.; Garthwaite, Paul H. and Curral, James (2000). Regression methods for high-dimensional multicollinear data. Communications in Statistics: Simulation and Computation, 29(4) pp. 1021–1037.

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To compare their performance on high dimensional data, several regression methods are applied to data sets in which the number of exploratory variables greatly exceeds the sample sizes. The methods are stepwise regression, principal components regression, two forms of latent root regression, partial least squares, and a new method developed here. The data are four sample sets for which near infrared reflectance spectra have been determined and the regression methods use the spectra to estimate the concentration of various chemical constituents, the latter having been determined by standard chemical analysis. Thirty-two regression equations are estimated using each method and their performances are evaluated using validation data sets. Although it is the most widely used, stepwise regression was decidedly poorer than the other methods considered. Differences between the latter were small with partial least squares performing slightly better than other methods under all criteria examined, albeit not by a statistically significant amount.

Item Type: Journal Item
Copyright Holders: 2000 Taylor & Francis
ISSN: 0361-0918
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Mathematics and Statistics
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 17977
Depositing User: Sara Griffin
Date Deposited: 25 Aug 2009 09:44
Last Modified: 07 Dec 2018 09:27
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