Results 51 to 60 of about 1,848,326 (324)

Effect of shortest path multiplicity on congestion of multiplex networks

open access: yesNew Journal of Physics, 2019
Shortest paths are representative of discrete geodesic distances in graphs, and many descriptors of networks depend on their counting. In multiplex networks, this counting is radically important to quantify the switch between layers and it has crucial ...
Albert Solé-Ribalta   +2 more
doaj   +1 more source

Discriminative Distance-Based Network Indices with Application to Link Prediction [PDF]

open access: yes, 2018
In large networks, using the length of shortest paths as the distance measure has shortcomings. A well-studied shortcoming is that extending it to disconnected graphs and directed graphs is controversial.
Abdessalem, Talel   +2 more
core   +1 more source

A Unifying Formalism for Shortest Path Problems with Expensive Edge Evaluations via Lazy Best-First Search over Paths with Edge Selectors [PDF]

open access: yesInternational Conference on Automated Planning and Scheduling, 2016
While the shortest path problem has myriad applications, the computational efficiency of suitable algorithms depends intimately on the underlying problem domain.
Christopher M. Dellin, S. Srinivasa
semanticscholar   +1 more source

Distributed approximation algorithms for weighted shortest paths [PDF]

open access: yesSymposium on the Theory of Computing, 2014
A distributed network is modeled by a graph having n nodes (processors) and diameter D. We study the time complexity of approximating weighted (undirected) shortest paths on distributed networks with a O (log n) bandwidth restriction on edges (the ...
Danupon Nanongkai
semanticscholar   +1 more source

Associative Parallel Algorithm for Dynamic Update of the Shortest Paths Tree

open access: yesМоделирование и анализ информационных систем, 2013
The paper proposes an efficient associative algorithm for dynamic update of the shortest paths tree of a directed weighted graph after deleting an edge.
A. S. Nepomniaschaya
doaj   +3 more sources

Computational Geometry Column 35 [PDF]

open access: yes, 1998
The subquadratic algorithm of Kapoor for finding shortest paths on a polyhedron is ...
O'Rourke, Joseph
core   +5 more sources

A genetic algorithm for finding the k shortest paths in a network

open access: yesEgyptian Informatics Journal, 2010
Most of the multimedia applications require the k shortest paths during the communication between a single source and multiple destinations. This problem is known as multimedia multicast routing and has been proved to be NP-complete. The paper proposes a
Ahmed Younes Hamed
doaj   +1 more source

Speeding up shortest path algorithms

open access: yes, 2012
Given an arbitrary, non-negatively weighted, directed graph $G=(V,E)$ we present an algorithm that computes all pairs shortest paths in time $\mathcal{O}(m^* n + m \lg n + nT_\psi(m^*, n))$, where $m^*$ is the number of different edges contained in ...
A.V. Goldberg   +10 more
core   +1 more source

Reliable Hubs for Partially-Dynamic All-Pairs Shortest Paths in Directed Graphs [PDF]

open access: yes, 2019
We give new partially-dynamic algorithms for the all-pairs shortest paths problem in weighted directed graphs. Most importantly, we give a new deterministic incremental algorithm for the problem that handles updates in O~(mn^(4/3) log{W}/epsilon) total ...
Karczmarz, Adam, Lacki, Jakub
core   +2 more sources

A Constrained Time-Dependent K Shortest Paths Algorithm Addressing Overlap and Travel Time Deviation

open access: yesInternational Journal of Transportation Science and Technology, 2015
Theoretical research often assumes all users are homogeneous in their route choice decision and will always pick the route with the shortest travel cost, which is not necessarily the case in reality. This paper documents the research effort in developing
Xianbiao Hu, PhD, Yi-Chang Chiu
doaj   +1 more source

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