Results 201 to 210 of about 305 (227)

Discrete Locally-Linear Preserving Hashing

2018 25th IEEE International Conference on Image Processing (ICIP), 2018
Recently, hashing has attracted considerable attention for nearest neighbor search due to its fast query speed and low storage cost. However, existing unsupervised hashing algorithms have two problems in common. Firstly, the widely utilized anchor graph construction algorithm has inherent limitations in local weight estimation.
Xiang Li 0041, Chao Ma 0005, Jie Yang 0002, Xiaolin Huang   +3 more
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Commutativity-preserving and normal-preserving linear transformations on

Linear and Multilinear Algebra, 1999
The linear transformations on that are commutatively-preserving and the linear transformations on that are normal preserving are characterized.
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Distance preserving linear feature selection

Pattern Recognition, 1979
Abstract A new method for linear feature selection is described which has as its underlying theme the preservation of actual distances between training data points in the lower dimensional space. Comparison with existing methodology places the method closer to the principle components or Karhunen- Loeve approach than to methods based on an approach ...
Jack Bryant, L. F. Guseman Jr.
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Eigenvectors of Order-Preserving Linear Operators

Journal of the London Mathematical Society, 1998
Summary: Suppose that \(K\) is a closed, total cone in a real Banach space \(X\), that \(A: X\to X\) is a bounded linear operator which maps \(K\) into itself, and that \(A'\) denotes the Banach space adjoint of \(A\). Assume that \(r\), the spectral radius of \(A\), is positive, and that there exist \(x_0\neq 0\) and \(m\geq 1\) with \(A^m(x_0)= r^m ...
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Homomorphisms Preserving Linear Conjunctive Languages

J. Autom. Lang. Comb., 2008
Journal of Automata, Languages and Combinatorics, Volume 13, Numbers 3-4, 2008, 299 ...
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Invertibility of linear f-order preservers

Journal of Mathematical Sciences, 2006
The notion of \(f\)-ordering on the matrix set \(M_{m,n}({\mathbb C})\) over the field of complex numbers \({\mathbb C}\) was defined by \textit{J. Hauke, A. Markiewicz} and \textit{T. Szulc} [Linear Algebra Appl. 332--334, 437--445 (2001; Zbl 0982.15027)] in the following way. Let \(f:[0,\infty)\to [0,\infty]\) be a bijective function satisfying \(f(0)
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Real local-linearity preserving embedding

Neurocomputing, 2014
Abstract In recent years, manifold learning methods have aroused a great interest in the machine learning community. A key issue that determines the effectiveness of the manifold learning methods is how to accurately capture the local geometry of the low-dimensional manifold.
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Linear Mappings which Preserve Paracontractions

Monatshefte f�r Mathematik, 2003
A paracontraction (relative to a given norm \(\|\cdot \|\) on a vector space \({\mathbb C}^n\)) is a matrix \(A\in {\mathcal M}_n({\mathbb C})\) with the property that either \(Ax = x\) or \(\| Ax\| < \| x\|\). In this paper, the author proves that a linear surjective map \(\Phi :{\mathcal M}_n({\mathbb C})\rightarrow {\mathcal M}_n({\mathbb C ...
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Linear Maps Preserving Matrix Discriminant

Journal of Mathematical Sciences
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Characterizing operations preserving separability measures via linear preserver problems

Linear and Multilinear Algebra, 2011
Nathaniel Johnston
exaly