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• W1796288240 abstract "We propose sparse Karhunen–Loeve Transform (SKLT) method to sparse eigen subspaces. The sparsity (cardinality reduction) is achieved through the pdf-optimized quantization of basis function (vector) set. It may be considered an extension of the simple and soft thresholding (ST) methods. The merit of the proposed framework for sparse representation is presented for auto-regressive order one, AR(1), discrete process and empirical correlation matrix of stock returns for NASDAQ-100 index. It is shown that SKLT is efficient to implement and outperforms several sparsity algorithms reported in the literature." @default.
• W1796288240 created "2016-06-24" @default.
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• W1796288240 date "2015-07-01" @default.
• W1796288240 modified "2023-09-26" @default.
• W1796288240 title "Quantization of Eigen Subspace for Sparse Representation" @default.
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• W1796288240 doi "https://doi.org/10.1109/tsp.2015.2430831" @default.
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