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• W2224882246 abstract "In a sparse representation based recognition scheme, it is critical to learn a desired dictionary, aiming both good representational power and discriminative performance. In this paper, we propose a new dictionary learning model for recognition applications, in which three strategies are adopted to achieve these two objectives simultaneously. First, a block-diagonal constraint is introduced into the model to eliminate the correlation between classes and enhance the discriminative performance. Second, a low-rank term is adopted to model the coherence within classes for refining the sparse representation of each class. Finally, instead of using the conventional over-complete dictionary, a specific dictionary constructed from the linear combination of the training samples is proposed to enhance the representational power of the dictionary and to improve the robustness of the sparse representation model. The proposed method is tested on several public datasets. The experimental results show the method outperforms most state-of-the-art methods." @default.
• W2224882246 created "2016-06-24" @default.
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• W2224882246 date "2016-01-07" @default.
• W2224882246 modified "2023-09-26" @default.
• W2224882246 title "Block-Diagonal Sparse Representation by Learning a Linear Combination Dictionary for Recognition" @default.
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• W2224882246 doi "https://doi.org/10.48550/arxiv.1601.01432" @default.
• W2224882246 hasPublicationYear "2016" @default.
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