Results 61 to 70 of about 412,590 (166)
Consistent Block Diagonal and Exclusive Multi-view Subspace Clustering [PDF]
Jisuanji kexueSubspace clustering method provides an effective solution to the clustering problem of high-dimensional multi-view data.Focusing on the issue that the representation matrix cannot obey the block diagonal property directly by using low rank or sparse ...
WU Jie, WAN Yuan, LIU Qiujie
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Block-Iterative Algorithms for Non-negative Matrix Approximation [PDF]
2008 Eighth IEEE International Conference on Data Mining, 2008 In this paper we present new algorithms for non-negative matrix approximation (NMA), commonly known as the NMF problem. Our methods improve upon the well-known methods of Lee & Seung [12] for both the Frobenius norm as well the Kullback-Leibler divergence versions of the problem. For the latter problem, our results are especially interesting because it
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eXPRESS Polymer Letters, 2011 In fiber-reinforced polymer pressure-retaining structures, such as pipes and vessels, micro-level failure commonly causes fluid permeation due to matrix cracking.
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Stochastic Block Covariance Matrix Estimation
Motivated by a neuroscience application we study the problem of statistical estimation of a high-dimensional covariance matrix with a block structure. The block model embeds a structural assumption: the population of items (neurons) can be divided into latent sub-populations with shared associative covariation within blocks and shared associative or ...
Chen, Yunran +2 more
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GeosciencesThe mechanical behavior of block-in-matrix materials is heavily dependent on their block content. This parameter is in most cases obtained through visual analyses of the ground through digital imagery, which provides the areal block proportion (ABP) of ...
Andrés Cristóbal +7 more
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Block covariance matrix estimation with structured off-diagonal blocks
Statistical PaperszbMATH Open Web Interface contents unavailable due to conflicting licenses.
Monika Mokrzycka, Malwina Mrowińska
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Journal of MathematicsIn this paper, the additive half-quadratic image restoration problem with zero boundary conditions is investigated. The Newton method is used to solve this problem and a structured linear system needs solving at each step.
Chaojie Wang +3 more
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Change of basis for tridiagonal pairs of type II
Nuclear Physics BThis paper is on the topic of tridiagonal pairs of type II. These involve two linear transformations A and A⋆. We define two bases. In the first one, A acts as a diagonal matrix while A⋆ acts as a block tridiagonal matrix, and in the second one, A acts ...
Nicolas Crampé +2 more
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Block incomplete factorization preconditioners for a symmetric block-tridiagonal M-matrix
Journal of Computational and Applied Mathematics, 1998 New block incomplete factorization preconditioners are introduced for a symmetric block-tridiagonal \(M\)-matrix. Parallel computations and the main properties including spectral properties of the method are analysed.
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Some results on the partial orderings of block matrices
Journal of Inequalities and Applications, 2011 Some results relating to the block matrix partial orderings and the submatrix partial orderings are given. Special attention is paid to the star ordering of a sum of two matrices and the minus ordering of matrix product. Several equivalent conditions for
Liu Xifu, Yang Hu
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