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Deflation in multiblock PLS
Author(s) -
Westerhuis Johan A.,
Smilde Age K.
Publication year - 2001
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/cem.652
Subject(s) - deflation , block (permutation group theory) , computer science , econometrics , mathematics , keynesian economics , economics , combinatorics , monetary policy
This 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.