Results 31 to 40 of about 839,618 (278)

Upward Three-Dimensional Grid Drawings of Graphs [PDF]

open access: yes, 2005
A \emph{three-dimensional grid drawing} of a graph is a placement of the vertices at distinct points with integer coordinates, such that the straight line segments representing the edges do not cross. Our aim is to produce three-dimensional grid drawings
A. Garg   +27 more
core   +3 more sources

Large-Scale Dynamic Social Network Directed Graph K-In&Out-Degree Anonymity Algorithm for Protecting Community Structure

open access: yesIEEE Access, 2019
Social network data publishing is dynamic, and attackers can perform association attacks based on social network directed graph data at different times.
Xiaolin Zhang   +3 more
doaj   +1 more source

The Structure of a Graph Inverse Semigroup [PDF]

open access: yes, 2015
Given any directed graph E one can construct a graph inverse semigroup G(E), where, roughly speaking, elements correspond to paths in the graph. In this paper we study the semigroup-theoretic structure of G(E).
Mesyan, Zachary, Mitchell, J. D.
core   +3 more sources

The Reduction of Directed Cyclic Graph for Task Assignment Problem

open access: yesMATEC Web of Conferences, 2018
In this paper, a directed cyclic graph (DCG) is proposed as the task graph. It is undesirable and impossible to complete the task according to the constraints if the cycle exists.
Ariffin W.N.M.
doaj   +1 more source

Directed Information Graphs [PDF]

open access: yesIEEE Transactions on Information Theory, 2015
41 pages, 15 ...
Christopher J. Quinn   +2 more
openaire   +2 more sources

Marked directed graphs

open access: yesJournal of Computer and System Sciences, 1971
Diverse graph structure models for concurrent processing systems have been suggested and used. The structures differ in generality and scope according to the properties one wishes to model and analyze. In this paper we solve a problem of maximal storage requirements for a simple flowchart model called the Marked Graph Model.
Frederic G. Commoner   +3 more
openaire   +2 more sources

Directed network Laplacians and random graph models

open access: yesRoyal Society Open Science, 2021
We consider spectral methods that uncover hidden structures in directed networks. We establish and exploit connections between node reordering via (a) minimizing an objective function and (b) maximizing the likelihood of a random graph model. We focus on
Xue Gong   +2 more
doaj   +1 more source

An Efficient Algorithm For Chinese Postman Walk on Bi-directed de Bruijn Graphs

open access: yes, 2010
Sequence assembly from short reads is an important problem in biology. It is known that solving the sequence assembly problem exactly on a bi-directed de Bruijn graph or a string graph is intractable. However finding a Shortest Double stranded DNA string
D.R. Zerbino   +5 more
core   +1 more source

A Graph Convolution for Signed Directed Graphs

open access: yesCoRR, 2022
Preprint ...
Ko, Taewook, Kim, Chong-Kwon
openaire   +2 more sources

Gromov Hyperbolicity in Directed Graphs [PDF]

open access: yesSymmetry, 2020
In this paper, we generalize the classical definition of Gromov hyperbolicity to the context of directed graphs and we extend one of the main results of the theory: the equivalence of the Gromov hyperbolicity and the geodesic stability. This theorem has potential applications to the development of solutions for secure data transfer on the internet.
Ana Portilla   +3 more
openaire   +3 more sources

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