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Why do sparse dictionary learning methods constrain the sparsity rather than the representation error?

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#sparsity
603
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Definition of sparsity

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#sparse-matrices #sparsity
60
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Does the optimal function in kernel method have a sparse representation?

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#functional-analysis #statistics #machine-learning #sparsity #reproducing-kernel-hilbert-spaces
132
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Matrix Sparsity Pattern

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#linear-algebra #matrices #sparse-matrices #sparsity
101
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In the Split-Bregman algorithm, what's the interpretation of the constraint strength parameter?

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#optimization #convex-optimization #sparsity
92
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Sparsity of the inverse of a non-negative matrix

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#linear-algebra #matrices #inverse #algebraic-graph-theory #sparsity
48
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Is compressed sensing for digital signals or could also be applied for discrete time signals?

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#compression #sparsity
39
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Continuous measure of number of large values in a sparse vector?

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#sparsity
74
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Encouraging sparse output in optimization problem

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#optimization #numerical-methods #machine-learning #numerical-optimization #sparsity
40
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Does the phrase "sparse bundle" mean anything?

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#terminology #fiber-bundles #sparsity
179
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Sparse recovery with L1 shrinkage iteration for higher denominational image classification

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#least-squares #regularization #sparse-matrices #sparsity
309
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Understanding derivation of ADMM update rule for graphical lasso optimization by solving quadratic matrix equation

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#optimization #convex-optimization #matrix-equations #lagrange-multiplier #sparsity
58
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Can $L1$-regularization be applied in general case?

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#optimization #regularization #sparsity
393
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Finding the unit vector minimizing the sum of the absolute values of the projections of a set of points

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#optimization #convex-optimization #nonlinear-optimization #sparsity
582
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If $ {L}_{0} $ Regularization Can be Done via the Proximal Operator, Why Are People Still Using LASSO?

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#optimization #non-convex-optimization #proximal-operators #sparsity

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