Results 21 to 30 of about 1,532 (205)

Recent Advances in Positive-Instance Driven Graph Searching

open access: yesAlgorithms, 2022
Research on the similarity of a graph to being a tree—called the treewidth of the graph—has seen an enormous rise within the last decade, but a practically fast algorithm for this task has been discovered only recently by Tamaki (ESA 2017).
Max Bannach, Sebastian Berndt
doaj   +1 more source

Constrained Connectivity in Bounded X-Width Multi-Interface Networks

open access: yesAlgorithms, 2020
As technology advances and the spreading of wireless devices grows, the establishment of interconnection networks is becoming crucial. Main activities that involve most of the people concern retrieving and sharing information from everywhere.
Alessandro Aloisio, Alfredo Navarra
doaj   +1 more source

On Supergraphs Satisfying CMSO Properties [PDF]

open access: yesLogical Methods in Computer Science, 2021
Let CMSO denote the counting monadic second order logic of graphs. We give a constructive proof that for some computable function $f$, there is an algorithm $\mathfrak{A}$ that takes as input a CMSO sentence $\varphi$, a positive integer $t$, and a ...
Mateus de Oliveira Oliveira
doaj   +1 more source

Patterns with Bounded Treewidth [PDF]

open access: yesInformation and Computation, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Reidenbach, Daniel, Schmid, Markus L.
openaire   +2 more sources

Clique‐width: Harnessing the power of atoms

open access: yesJournal of Graph Theory, Volume 104, Issue 4, Page 769-810, December 2023., 2023
Abstract Many NP‐complete graph problems are polynomial‐time solvable on graph classes of bounded clique‐width. Several of these problems are polynomial‐time solvable on a hereditary graph class G ${\mathscr{G}}$ if they are so on the atoms (graphs with no clique cut‐set) of G ${\mathscr{G}}$.
Konrad K. Dabrowski   +4 more
wiley   +1 more source

The Treewidth of Induced Graphs of Conditional Preference Networks Is Small

open access: yesInformation, 2016
Conditional preference networks (CP-nets) are recently an emerging topic as a graphical model for compactly representing ordinal conditional preference relations on multi-attribute domains.
Jie Liu, Jinglei Liu
doaj   +1 more source

Tuza's Conjecture for Threshold Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
Tuza famously conjectured in 1981 that in a graph without k+1 edge-disjoint triangles, it suffices to delete at most 2k edges to obtain a triangle-free graph. The conjecture holds for graphs with small treewidth or small maximum average degree, including
Marthe Bonamy   +6 more
doaj   +1 more source

Vertex covering with capacitated trees

open access: yesNetworks, Volume 81, Issue 2, Page 253-277, March 2023., 2023
Abstract The covering of a graph with (possibly disjoint) connected subgraphs is a fundamental problem in graph theory. In this paper, we study a version to cover a graph's vertices by connected subgraphs subject to lower and upper weight bounds, and propose a column generation approach to dynamically generate feasible and promising subgraphs.
Ralf Borndörfer   +2 more
wiley   +1 more source

DynASP2.5: Dynamic Programming on Tree Decompositions in Action

open access: yesAlgorithms, 2021
Efficient exact parameterized algorithms are an active research area. Such algorithms exhibit a broad interest in the theoretical community. In the last few years, implementations for computing various parameters (parameter detection) have been ...
Johannes K. Fichte   +3 more
doaj   +1 more source

Explainable activity recognition in videos: Lessons learned

open access: yesApplied AI Letters, Volume 2, Issue 4, December 2021., 2021
Abstract We consider the following activity recognition task: given a video, infer the set of activities being performed in the video and assign each frame to an activity. This task can be solved using modern deep learning architectures based on neural networks or conventional classifiers such as linear models and decision trees.
Chiradeep Roy   +7 more
wiley   +1 more source

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