Results 31 to 40 of about 79,461 (254)

Network Regression with Graph Laplacians

open access: yes, 2021
41 pages, 13 ...
Zhou, Yidong, Müller, Hans-Georg
openaire   +3 more sources

Extremal Graph Realizations and Graph Laplacian Eigenvalues

open access: yesSIAM Journal on Discrete Mathematics, 2023
For a regular polyhedron (or polygon) centered at the origin, the coordinates of the vertices are eigenvectors of the graph Laplacian for the skeleton of that polyhedron (or polygon) associated with the first (non-trivial) eigenvalue. In this paper, we generalize this relationship.
openaire   +2 more sources

Sparse Graph Learning Under Laplacian-Related Constraints

open access: yesIEEE Access, 2021
We consider the problem of learning a sparse undirected graph underlying a given set of multivariate data. We focus on graph Laplacian-related constraints on the sparse precision matrix that encodes conditional dependence between the random variables ...
Jitendra K. Tugnait
doaj   +1 more source

Bilateral Filter: Graph Spectral Interpretation and Extensions [PDF]

open access: yes, 2013
In this paper we study the bilateral filter proposed by Tomasi and Manduchi, as a spectral domain transform defined on a weighted graph. The nodes of this graph represent the pixels in the image and a graph signal defined on the nodes represents the ...
Gadde, Akshay   +2 more
core   +2 more sources

Signless Laplacian spectrum of power graphs of finite cyclic groups

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
In this paper, we have studied the Signless Laplacian spectrum of the power graph of finite cyclic groups. We have shown that is an eigen value of Signless Laplacian of the power graph of with multiplicity at least In particular, using the theory of ...
Subarsha Banerjee, Avishek Adhikari
doaj   +1 more source

Some Chemistry Indices of Clique-Inserted Graph of a Strongly Regular Graph

open access: yesComplexity, 2021
In this paper, we give the relation between the spectrum of strongly regular graph and its clique-inserted graph. The Laplacian spectrum and the signless Laplacian spectrum of clique-inserted graph of strongly regular graph are calculated.
Chun-Li Kan   +3 more
doaj   +1 more source

Novel Concept of Energy in Bipolar Single-Valued Neutrosophic Graphs with Applications

open access: yesAxioms, 2021
The energy of a graph is defined as the sum of the absolute values of its eigenvalues. Recently, there has been a lot of interest in graph energy research.
Siti Nurul Fitriah Mohamad   +3 more
doaj   +1 more source

A generalization of the graph Laplacian with application to a distributed consensus algorithm

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2015
In order to describe the interconnection among agents with multi-dimensional states, we generalize the notion of a graph Laplacian by extending the adjacency weights (or weighted interconnection coefficients) from scalars to matrices.
Zhai Guisheng
doaj   +1 more source

On the Seidel Laplacian spectrum of threshold graphs [PDF]

open access: yesJournal of Hyperstructures
A graph which does not contain C4, P4, or 2K2 as its induced subgraphs, is called a threshold graph. In this paper, we consider seidel laplacian matrix of a connected threshold graph and determine the seidel laplacian spectrum. Also, the characterization
Megha P M, Parvathy K S
doaj   +1 more source

Modified Graph Laplacian Model With Local Contrast and Consistency Constraint for Small Target Detection

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The traditional graph Laplacian model has been widely used in many computer vision tasks. The small target detection technique is one of the most challenging computer vision tasks in various practical applications.
Chaoqun Xia   +3 more
doaj   +1 more source

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