Results 31 to 40 of about 39,682 (219)

Two graph isomorphism polytopes [PDF]

open access: yes, 2008
The convex hull $\psi_{n,n}$ of certain $(n!)^2$ tensors was considered recently in connection with graph isomorphism. We consider the convex hull $\psi_n$ of the $n!$ diagonals among these tensors. We show: 1. The polytope $\psi_n$ is a face of $\psi_{n,
Onn, Shmuel
core   +3 more sources

On QSAR-based cardiotoxicity modeling with the expressiveness-enhanced graph learning model and dual-threshold scheme

open access: yesFrontiers in Physiology, 2023
Introduction: Given the direct association with malignant ventricular arrhythmias, cardiotoxicity is a major concern in drug design. In the past decades, computational models based on the quantitative structure–activity relationship have been proposed to
Huijia Wang   +7 more
doaj   +1 more source

Pattern matching and pattern discovery algorithms for protein topologies [PDF]

open access: yes, 2001
We describe algorithms for pattern matching and pattern learning in TOPS diagrams (formal descriptions of protein topologies). These problems can be reduced to checking for subgraph isomorphism and finding maximal common subgraphs in a restricted ...
C. Bron   +14 more
core   +1 more source

Inferring local topology via variational convolution for graph representation

open access: yes工程科学学报, 2023
The development of deep learning techniques and support of big data computing power have revolutionized graph representation research by facilitating the implementation of the learning of different graph neural network structures.
Jingyi HOU   +3 more
doaj   +1 more source

An Optimization of Closed Frequent Subgraph Mining Algorithm

open access: yesCybernetics and Information Technologies, 2017
Graph mining isamajor area of interest within the field of data mining in recent years. Akey aspect of graph mining is frequent subgraph mining. Central to the entire discipline of frequent subgraph mining is the concept of subgraph isomorphism.
Demetrovics J.   +3 more
doaj   +1 more source

SING: Subgraph search In Non-homogeneous Graphs

open access: yesBMC Bioinformatics, 2010
Background Finding the subgraphs of a graph database that are isomorphic to a given query graph has practical applications in several fields, from cheminformatics to image understanding.
Pulvirenti Alfredo   +5 more
doaj   +1 more source

An experimental evaluation of refinement techniques for the subgraph isomorphism backtracking algorithms

open access: yesOpen Computer Science, 2020
In this paper, we study a well-known computationally hard problem, called the subgraph isomorphism problem where the goal is for a given pattern and target graphs to determine whether the pattern is a subgraph of the target graph. Numerous algorithms for
Mihelič Jurij, Čibej Uroš
doaj   +1 more source

Surface Split Decompositions and Subgraph Isomorphism in Graphs on Surfaces [PDF]

open access: yes, 2011
The Subgraph Isomorphism problem asks, given a host graph G on n vertices and a pattern graph P on k vertices, whether G contains a subgraph isomorphic to P. The restriction of this problem to planar graphs has often been considered.
Bonsma, Paul
core   +5 more sources

On Minimal Unique Induced Subgraph Queries

open access: yesApplied Sciences, 2018
In this paper, a novel type of interesting subgraph query is proposed: Minimal Unique Induced Subgraph (MUIS) query. Given a (large) graph G and a query vertex (position) q in the graph, can we find an induced subgraph containing q with the minimal ...
Lincheng Jiang   +6 more
doaj   +1 more source

Indexing query graphs to speedup graph query processing [PDF]

open access: yes, 2016
Subgraph/supergraph queries although central to graph analytics, are costly as they entail the NP-Complete problem of subgraph isomorphism. We present a fresh solution, the novel principle of which is to acquire and utilize knowledge from the results of ...
Ntarmos, Nikos   +2 more
core   +2 more sources

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