Results 61 to 70 of about 424,447 (182)

ALTERNATIVE PROOF ON THE CROSSING NUMBER OF K1,1,3,N [PDF]

open access: yesActa Electrotechnica et Informatica, 2019
The main aim of the paper is to give the crossing number of join product G+Dn for the connected graph G of order five isomorphic with the complete tripartite graph K1,1,3, where Dn consists on n isolated vertices.
Michal STAS
doaj   +1 more source

A layout framework for genome-wide multiple sequence alignment graphs

open access: yesFrontiers in Bioinformatics
Sequence alignments are often used to analyze genomic data. However, such alignments are often only calculated and compared on small sequence intervals for analysis purposes.
Jeremias Schebera   +3 more
doaj   +1 more source

Orthogonal Graph Drawing with Inflexible Edges

open access: yes, 2015
We consider the problem of creating plane orthogonal drawings of 4-planar graphs (planar graphs with maximum degree 4) with constraints on the number of bends per edge.
Bläsius, Thomas   +2 more
core   +1 more source

Simultaneous Orthogonal Planarity

open access: yes, 2016
We introduce and study the $\textit{OrthoSEFE}-k$ problem: Given $k$ planar graphs each with maximum degree 4 and the same vertex set, do they admit an OrthoSEFE, that is, is there an assignment of the vertices to grid points and of the edges to paths on
A Estrella-Balderrama   +24 more
core   +1 more source

The Widths of Strict Outerconfluent Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
Strict outerconfluent drawing is a style of graph drawing in which vertices are drawn on the boundary of a disk, adjacencies are indicated by the existence of smooth curves through a system of tracks within the disk, and no two adjacent vertices are ...
David Eppstein
doaj   +1 more source

Straight-line Drawability of a Planar Graph Plus an Edge

open access: yes, 2015
We investigate straight-line drawings of topological graphs that consist of a planar graph plus one edge, also called almost-planar graphs. We present a characterization of such graphs that admit a straight-line drawing.
C Gutwenger   +8 more
core   +1 more source

Frequent Graph Discovery: Application to Line Drawing Document Images

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2005
In this paper a sequence of steps is applied to a graph representation of line drawings using concepts from data mining. This process finds frequent subgraphs and then association rules between these subgraphs.
Eugen Barbu   +3 more
doaj   +1 more source

3D Implementation of SVG

open access: yesGong-kuang zidonghua, 2012
In view of problem of limitation on description and drawing of 3D graph by SVG, the paper proposed a 3D implementing method of SVG. It introduced conversion principle of 2D coordinate to 3D coordinate of SVG in details, gave processes of drawing and ...
WANG Li-li
doaj  

Various heuristic algorithms to minimise the two-page crossing numbers of graphs

open access: yesOpen Computer Science, 2015
We propose several new heuristics for the twopage book crossing problem, which are based on recent algorithms for the corresponding one-page problem. Especially, the neural network model for edge allocation is combined for the first time with various one-
He Hongmei   +3 more
doaj   +1 more source

On Smooth Orthogonal and Octilinear Drawings: Relations, Complexity and Kandinsky Drawings

open access: yes, 2017
We study two variants of the well-known orthogonal drawing model: (i) the smooth orthogonal, and (ii) the octilinear. Both models form an extension of the orthogonal, by supporting one additional type of edge segments (circular arcs and diagonal segments,
A Garg   +29 more
core   +1 more source

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