Results 21 to 30 of about 190,829 (309)

Partitions of Graphs into Cographs

open access: yesElectronic Notes in Discrete Mathematics, 2002
AbstractCographs form the minimal family of graphs containing K1 that is closed with respect to complementation and disjoint union. We discuss vertex partitions of graphs into the smallest number of cographs. We introduce a new parameter, calling the minimum order of such a partition the c-chromatic number of the graph. We begin by axiomatizing several
Jaroslav Nesetril, John Gimbel
openaire   +3 more sources

Partitions in Matrices and Graphs

open access: yesEuropean Journal of Combinatorics, 1991
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
D. R. Hughes, N. M. Singhi
openaire   +2 more sources

Adaptive Partitioning for Large-Scale Dynamic Graphs [PDF]

open access: yes, 2013
—In the last years, large-scale graph processing has gained increasing attention, with most recent systems placing particular emphasis on latency. One possible technique to improve runtime performance in a distributed graph processing system is to reduce
Cuadrado, F   +4 more
core   +2 more sources

GAP: Genetic Algorithm Based Large-Scale Graph Partition in Heterogeneous Cluster

open access: yesIEEE Access, 2020
Graph is an important model to describe various networks, and its scale becomes larger and larger with the development of communication and information technology.
Menghan Li   +3 more
doaj   +1 more source

Generalized partitions of graphs

open access: yesDiscrete Applied Mathematics, 1999
The authors introduce a general graph partitioning problem: Let \(C\) be a class of graphs and \(H\) a fixed graph with vertex class \(V(H)=\{1,2,\dots,n\}\). An (resp. ONTO) \((H,C)\)-partition of a graph \(G\) is a partition \(V_1,V_2,\dots,V_n\) of \(V(G)\) such that, for each \(i\), the subgraph of \(G\) induced by \(V_i\) belongs to \(C\) and, if \
Gary MacGillivray, Min-Li Yu
openaire   +2 more sources

On tree-partitions of graphs

open access: yesDiscrete Mathematics, 1996
A graph \(G\) admits a tree-partition of width \(k\) if its vertex set can be partitioned into sets of size at most \(k\) so that the graph obtained by identifying the vertices in each set of the partition, and then deleting loops and parallel edges, is a forest. If no such \(k\) exist, the width is set to be infinite.
Bogdan Oporowski, Guoli Ding
openaire   +3 more sources

Revisiting the Isoperimetric Graph Partitioning Problem

open access: yesIEEE Access, 2019
Isoperimetric graph partitioning, which is also known as the Cheeger cut, is NP-hard in its original form. In the literature, multiple modifications to this problem have been proposed to obtain approximation algorithms for clustering applications. In the
Sravan Danda   +3 more
doaj   +1 more source

A Novel Partitioning Method for Accelerating the Block Cimmino Algorithm [PDF]

open access: yes, 2018
We propose a novel block-row partitioning method in order to improve the convergence rate of the block Cimmino algorithm for solving general sparse linear systems of equations.
Aykanat, Cevdet   +2 more
core   +2 more sources

Partitioning the edges of a graph

open access: yesJournal of Combinatorial Theory, Series B, 1978
AbstractFor any integer m (≥2), it is known that there are simple graphs of maximum valence m whose edges cannot be coloured with m colours in such a way that adjacent edges shall have different colours. We find those values of m and k for which it is true that every simple graph whose maximum valence does not exceed mk can be coloured with m colours ...
Anthony J. W. Hilton, Rhys Price Jones
openaire   +3 more sources

RBSEP: a reassignment and buffer based streaming edge partitioning approach

open access: yesJournal of Big Data, 2019
In recent years, the rapid growth of the Internet has led to creation of massively large graphs. Since databases have become very large nowadays, they cannot be processed by a simple machine at an acceptable time anymore; therefore, traditional graph ...
Monireh Taimouri, Hamid Saadatfar
doaj   +1 more source

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