Results 41 to 50 of about 323,816 (328)

Graph spectra in Computer Science

Linear Algebra and its Applications, 2011
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Cvetković, Dragoš, Simić, Slobodan
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Local image descriptor based on spectral embedding

IET Computer Vision, 2015
This study presents a local image descriptor based on spectral embedding. Specifically, the spectra of line graph are used to represent image edges, corners and edge points with big curvature.
Pu Yan, Jun Tang, Ming Zhu, Dong Liang
doaj   +1 more source

Graphs determined by signless Laplacian spectra

AKCE International Journal of Graphs and Combinatorics, 2020
In the past decades, graphs that are determined by their spectrum have received more attention, since they have been applied to several fields, such as randomized algorithms, combinatorial optimization problems and machine learning.
Ali Zeydi Abdian, Afshin Behmaram, Gholam Hossein Fath-Tabar   +2 more
doaj   +1 more source

The spectra of arrangement graphs

Linear Algebra and its Applications, 2017
Arrangement graphs were introduced for their connection to computational networks and have since generated considerable interest in the literature. In a pair of recent articles by Chen, Ghorbani and Wong, the eigenvalues for the adjacency matrix of an (n,k)-arrangement graph are studied and shown to be integers.
Araujo, José O., Bratten, Tim
openaire   +2 more sources

Band spectra of rectangular graph superlattices

, 1995
We consider rectangular graph superlattices of sides l1, l2 with the wavefunction coupling at the junctions either of the delta type, when they are continuous and the sum of their derivatives is proportional to the common value at the junction with a ...
A. M. Berezhkovski, D. R. Hofstadter, F. Bentosela, J. Bellissard, J. E. Avron, J. E. Avron, J. Gratus, K. Ruedenberg, M. A. Shubin, M. M. Skriganov, M. M. Skriganov, M. Maioli, N. I. Gerasimenko, P. Ao, P. Duclos, P. Exner, P. Exner, P. Exner, P. Exner, P. G. Harper, R. Gawlista, S. Albeverio, V. M. Adamyan, W. Bulla, Y. Avishai, Y. Last, Yu. E. Karpeshina   +26 more
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Spectral properties of the commuting graphs of certain groups

AKCE International Journal of Graphs and Combinatorics, 2019
Let G be a finite group. The commuting graph Γ=C(G)is a simple graph with vertex set G and two vertices are adjacent if and only if they commute with each other.
M. Torktaz, A.R. Ashrafi
doaj   +2 more sources

Consensus Indices of Two-Layered Multi-Star Networks: An Application of Laplacian Spectrum

Frontiers in Physics, 2021
In this article, the convergence speed and robustness of the consensus for several dual-layered star-composed multi-agent networks are studied through the method of graph spectra.
Da Huang, Jicheng Bian, Haijun Jiang, Zhiyong Yu   +3 more
doaj   +1 more source

Spectra of graph neighborhoods and scattering

, 2007
Let $(G_\epsilon)_{\epsilon>0}$ be a family of '$\epsilon$-thin' Riemannian manifolds modeled on a finite metric graph $G$, for example, the $\epsilon$-neighborhood of an embedding of $G$ in some Euclidean space with straight edges.
Grieser, Daniel
core   +1 more source

The Laplacian spectrum of neural networks

Frontiers in Computational Neuroscience, 2014
The brain is a complex network of neural interactions, both at the microscopic and macroscopic level. Graph theory is well suited to examine the global network architecture of these neural networks.
Siemon ede Lange, Marcel ede Reus, Martijn eVan Den Heuvel   +2 more
doaj   +1 more source

Statistical Properties of Quantum Graph Spectra

, 2006
A general analytical approach to the statistical description of quantum graph spectra based on the exact periodic orbit expansions of quantum levels is discussed.
Dabaghian, Yu.
core   +3 more sources