Deflation in multiblock PLS

Journal of Chemometrics - Tập 15 Số 5 - Trang 485-493 - 2001
Johan A. Westerhuis1, Age K. Smilde1
1Process Analysis and Chemometrics, Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166, NL‐1018 WV Amsterdam, The Netherlands

Tóm tắt

AbstractThis paper describes some of the deflation problems in multiblock PLS. Deflation of X using block scores leads to inferior prediction of Y. Deflation of X using super scores gives the same predictions as standard PLS with all variables in one large X‐block, but the information of the separate blocks gets mixed up owing to the deflation of X. If Y is deflated using the super score instead, these problems disappear. Copyright © 2001 John Wiley & Sons, Ltd.

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Tài liệu tham khảo

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Journal of Chemometrics

Tập 15 Số 5

485-493

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