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- Title
Solving the sign indeterminacy for multiway models.
- Authors
Bro, Rasmus; Leardi, Riccardo; Johnsen, Lea Giørtz
- Abstract
Bilinear and multilinear models such as principal component analysis and PARAFAC have intrinsic sign indeterminacies. For example, any loading vector can be multiplied by −1 if another vector of that particular component is also multiplied by −1 without affecting the loss function values. This sometimes causes problems, for example, with respect to interpretation. In this paper, a method is developed to fix the sign indeterminacy for the PARAFAC, Tucker3 and PARAFAC2 models. Copyright © 2013 John Wiley & Sons, Ltd.
- Publication
Journal of Chemometrics, 2013, Vol 27, Issue 3/4, p70
- ISSN
0886-9383
- Publication type
Article
- DOI
10.1002/cem.2493