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ECOLE SUPÉRIEURE D'ÉLECTRICITÉ Une grande école d'ingénieurs au cœur des sciences de l'information,de l'énergie et des systèmes |
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Book sections
Globally sparse PLS regression
Abstract : Partial least squares (PLS) regression combines dimensionality reduction and prediction using a latent variable model. It provides better predictive ability than principle component analysis by taking into account both the independent and re- sponse variables in the dimension reduction procedure. However, PLS suffers from over-fitting problems for few samples but many variables. We formulate a new criterion for sparse PLS by adding a structured sparsity constraint to the global SIMPLS optimization. The constraint is a sparsity-inducing norm, which is useful for selecting the important variables shared among all the components. The optimization is solved by an augmented Lagrangian method to obtain the PLS components and to perform variable selection simultaneously. We propose a novel greedy algorithm to overcome the computation difficulties. Experiments demonstrate that our approach to PLS regression attains better performance with fewer selected predictors
Cited literature [18 references]
https://hal-supelec.archives-ouvertes.fr/hal-01069009
Contributor : Alexandra Siebert Connect in order to contact the contributor
Submitted on : Friday, September 26, 2014 - 4:09:48 PM
Last modification on : Monday, December 14, 2020 - 12:38:06 PM
Long-term archiving on: : Friday, April 14, 2017 - 2:44:51 PM
Contributor : Alexandra Siebert Connect in order to contact the contributor
Submitted on : Friday, September 26, 2014 - 4:09:48 PM
Last modification on : Monday, December 14, 2020 - 12:38:06 PM
Long-term archiving on: : Friday, April 14, 2017 - 2:44:51 PM
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liu_GSIMPLS_Springer13.pdf
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