Results 1 to 10 of about 21,959 (221)

On the First-Order Complexity of Induced Subgraph Isomorphism [PDF]

open access: greenLogical Methods in Computer Science, 2019
Given a graph $F$, let $I(F)$ be the class of graphs containing $F$ as an induced subgraph. Let $W[F]$ denote the minimum $k$ such that $I(F)$ is definable in $k$-variable first-order logic.
Oleg Verbitsky, Maksim Zhukovskii
doaj   +3 more sources

DotMotif: an open-source tool for connectome subgraph isomorphism search and graph queries [PDF]

open access: yesScientific Reports, 2021
Recent advances in neuroscience have enabled the exploration of brain structure at the level of individual synaptic connections. These connectomics datasets continue to grow in size and complexity; methods to search for and identify interesting graph ...
Jordan K. Matelsky   +6 more
doaj   +2 more sources

Quantum Query Complexity of Subgraph Isomorphism and Homomorphism [PDF]

open access: green, 2015
Let $H$ be a fixed graph on $n$ vertices. Let $f_H(G) = 1$ iff the input graph $G$ on $n$ vertices contains $H$ as a (not necessarily induced) subgraph. Let $\alpha_H$ denote the cardinality of a maximum independent set of $H$. In this paper we show: \[
Kulkarni, Raghav, Podder, Supartha
core   +4 more sources

SEARCH-TREE SIZE ESTIMATION FOR THE SUBGRAPH ISOMORPHISM PROBLEM [PDF]

open access: diamondActa Electrotechnica et Informatica, 2019
This article addresses the problem of finding patterns in graphs. This is formally defined as the subgraph isomorphism problem and is one of the core problems in theoretical computer science. We consider the counting variation of this problem.
Uroš Čibej, Jurij MIHELIČ
doaj   +2 more sources

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

open access: goldOpen 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   +2 more sources

TemporalRI: subgraph isomorphism in temporal networks with multiple contacts [PDF]

open access: goldApplied Network Science, 2021
Temporal networks are graphs where each edge is associated with a timestamp denoting when two nodes interact. Temporal Subgraph Isomorphism (TSI) aims at retrieving all the subgraphs of a temporal network (called target) matching a smaller temporal ...
Giovanni Micale   +3 more
doaj   +2 more sources

Efficient Large-Scale IoT Botnet Detection through GraphSAINT-Based Subgraph Sampling and Graph Isomorphism Network [PDF]

open access: goldMathematics
In recent years, with the rapid development of the Internet of Things, large-scale botnet attacks have occurred frequently and have become an important challenge to network security.
Lihua Yin   +3 more
doaj   +2 more sources

SEGCN: a subgraph encoding based graph convolutional network model for social bot detection [PDF]

open access: yesScientific Reports
Message passing neural networks such as graph convolutional networks (GCN) can jointly consider various types of features for social bot detection. However, the expressive power of GCN is upper-bounded by the 1st-order Weisfeiler–Leman isomorphism test ...
Feng Liu   +5 more
doaj   +2 more sources

An Efficient Subgraph Isomorphism Solver for Large Graphs

open access: yesIEEE Access, 2021
For a given pair of pattern and data graphs, the subgraph isomorphism finding problem locates all instances of the pattern graph into the data graph. For a given subgraph isomorphic image of the pattern graph in a data graph, the set of all ordered pairs
Zubair Ali Ansari   +2 more
doaj   +1 more source

Isomorphic Subgraph Search Algorithm Based on Neighborhood Equivalence Class [PDF]

open access: yesJisuanji gongcheng, 2017
Node heterogeneous graph is often used as a data model for complex networks.Isomorphic subgraph search is an important problem in heterogeneous graph mining,but existing algorithms have shortcomings in subgraph removal,which reduces the efficiency of ...
ZHANG Yutong,WANG Simeng,CAO Jia
doaj   +1 more source

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