Results 31 to 40 of about 1,095,836 (281)
Limited-memory fast gradient descent method for graph regularized nonnegative matrix factorization. [PDF]
PLoS ONE, 2013 Graph regularized nonnegative matrix factorization (GNMF) decomposes a nonnegative data matrix X[Symbol:see text]R(m x n) to the product of two lower-rank nonnegative factor matrices, i.e.,W[Symbol:see text]R(m x r) and H[Symbol:see text]R(r x n) (r ...
Naiyang Guan +3 more
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A new steplength selection for scaled gradient methods with application to image deblurring [PDF]
, 2015 Gradient methods are frequently used in large scale image deblurring problems since they avoid the onerous computation of the Hessian matrix of the objective function.
Porta, Federica +2 more
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Spin-spin correlation functions of the XXZ-1/2 Heisenberg chain in a magnetic field [PDF]
, 2002 Using algebraic Bethe ansatz and the solution of the quantum inverse scattering problem, we compute compact representations of the spin-spin correlation functions of the XXZ-1/2 Heisenberg chain in a magnetic field.
Bethe +33 more
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Group inverse extensions of certain $M$-matrix properties
The Electronic Journal of Linear Algebra, 2016 In this article, generalizations of certain $M$-matrix properties are proved for the group generalized inverse. The proofs use the notion of proper splittings of one type or the other. In deriving certain results, we make use of a recently introduced notion of a $B_{\#}$-splitting.
Appi Reddy K., Kurmayya T., K. Sivakumar
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ON CONDITIONS FOR MATRICES T SUCH THAT T-I AND I-T^(-1) ARE INVERSE H-MATRICES*
BarekengIn this article, we study an analogue of a classical result for M-matrices: if T - I is an invertible M-matrix, then both T and I - T-1 are also invertible M-matrices. We extend this implication to a broader class—inverse H-matrices.
Jeriko Gormantara +3 more
doaj +1 more source
Sector showers for hadron collisions
Journal of High Energy Physics, 2020 In conventional parton showers (including ones based on dipoles/antennae), a given (Born + m)-parton configuration can typically be reached via O(m!) different “shower histories”.
Helen Brooks +2 more
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Some Bounds on Eigenvalues of the Hadamard Product and the Fan Product of Matrices
Mathematics, 2019 In this paper, an upper bound on the spectral radius ρ ( A ∘ B ) for the Hadamard product of two nonnegative matrices (A and B) and the minimum eigenvalue τ ( C ★ D ) of the Fan product of two M-matrices (C and D) are researched.
Qianping Guo +3 more
doaj +1 more source
Transmission statistics and focusing in single disordered samples
, 2013 We show in microwave experiments and random matrix calculations that in samples with a large number of channels the statistics of transmission for different incident channels relative to the average transmission is determined by a single parameter, the ...
Davy, Matthieu +3 more
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On the inverse mean first passage matrix problem and the inverse M-matrix problem
Linear Algebra and its Applications, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Neumann, Michael, Sze, Nung-Sing
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Applied Sciences, 2018 This paper investigates the F – M synchronization between non-identical fractional-order systems characterized by different dimensions and different orders.
Adel Ouannas +4 more
doaj +1 more source