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- W2169574652 abstract "In this work, we propose a novel supervised matrix factorization method used directly as a multi-class classifier. The coefficient matrix of the factorization is enforced to be sparse by l 1 -norm regularization. The basis matrix is composed of atom dictionaries from different classes, which are trained in a jointly supervised manner by penalizing inhomogeneous representations given the labeled data samples. The learned basis matrix models the data of interest as a union of discriminative linear subspaces by sparse projection. The proposed model is based on the observation that many high-dimensional natural signals lie in a much lower dimensional subspaces or union of subspaces. Experiments conducted on several datasets show the effectiveness of such a representation model for classification, which also suggests that a tight reconstructive representation model could be very useful for discriminant analysis." @default.
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- W2169574652 date "2011-07-01" @default.
- W2169574652 modified "2023-09-24" @default.
- W2169574652 title "Learning the sparse representation for classification" @default.
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- W2169574652 doi "https://doi.org/10.1109/icme.2011.6012083" @default.
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