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In this paper, our goal is to characterize two graph classes based on the properties of minimal vertex (edge) separators. We first present a structural characterization of graphs in which every minimal vertex separator is a stable set. We…

离散数学 · 计算机科学 2011-03-16 Mrinal Kumar , Gaurav Maheswari , N. Sadagopan

Core decomposition is a classic technique for discovering densely connected regions in a graph with large range of applications. Formally, a $k$-core is a maximal subgraph where each vertex has at least $k$ neighbors. A natural extension of…

数据结构与算法 · 计算机科学 2023-01-31 Nikolaj Tatti

A vertex whose removal in a graph $G$ increases the number of components of $G$ is called a cut vertex. For all $n,c$, we determine the maximum number of connected induced subgraphs in a connected graph with order $n$ and $c$ cut vertices,…

组合数学 · 数学 2019-10-11 Audace A. V. Dossou-Olory

Can we use machine learning to compress graph data? The absence of ordering in graphs poses a significant challenge to conventional compression algorithms, limiting their attainable gains as well as their ability to discover relevant…

机器学习 · 计算机科学 2023-09-26 Giorgos Bouritsas , Andreas Loukas , Nikolaos Karalias , Michael M. Bronstein

Automatic bill payment is an important part of business operations in fintech companies. The practice of deduction was mainly based on the total amount or heuristic search by dividing the bill into smaller parts to deduct as much as…

机器学习 · 计算机科学 2023-06-21 Shuai Xiao , Chen Pan , Min Wang , Xinxin Zhu , Siqiao Xue , Jing Wang , Yunhua Hu , James Zhang , Jinghua Feng

Background subtraction is a fundamental pre-processing task in computer vision. This task becomes challenging in real scenarios due to variations in the background for both static and moving camera sequences. Several deep learning methods…

计算机视觉与模式识别 · 计算机科学 2020-11-09 Jhony H. Giraldo , Thierry Bouwmans

Partitioning a graph into balanced components is important for several applications. For multi-objective problems, it is useful not only to find one solution but also to enumerate all the solutions with good values of objectives. However,…

数据结构与算法 · 计算机科学 2018-04-09 Yu Nakahata , Jun Kawahara , Shoji Kasahara

The k-forcing number of a graph is a generalization of the zero forcing number. In this note, we give a greedy algorithm to approximate the k-forcing number of a graph. Using this dynamic approach, we give corollaries which improve upon two…

组合数学 · 数学 2014-05-30 Yair Caro , Ryan Pepper

Motivated by recent applications of dominator computations, we consider the problem of dynamically maintaining the dominators of flow graphs through a sequence of insertions and deletions of edges. Our main theoretical contribution is a…

数据结构与算法 · 计算机科学 2016-04-12 Loukas Georgiadis , Giuseppe F. Italiano , Luigi Laura , Federico Santaroni

Parity games are games that are played on directed graphs whose vertices are labeled by natural numbers, called priorities. The players push a token along the edges of the digraph. The winner is determined by the parity of the greatest…

计算机科学与博弈论 · 计算机科学 2015-03-20 Christoph Dittmann , Stephan Kreutzer , Alexandru I. Tomescu

A graph with $n$ vertices is an $f(\cdot)$-dense graph if it has at least $f(n)$ edges, $f(\cdot)$ being a well-defined function. The notion $f(\cdot)$-dense graph encompasses various clique models like $\gamma$-quasi cliques, $k$-defective…

数据结构与算法 · 计算机科学 2025-11-07 Yi Zhou , Chunyu Luo , Zhengren Wang , Zhang-Hua Fu

The need for recognition/approximation of functions in terms of elementary functions/operations emerges in many areas of experimental mathematics, numerical analysis, computer algebra systems, model building, machine learning, approximation…

离散数学 · 计算机科学 2021-06-09 Andrzej Odrzywolek

A vertex set $X$ of a graph $G$ is an association set if each component of $G - X$ is a clique, or a dissociation set if each component of $G - X$ is a single vertex or a single edge. Interestingly, $G - X$ is then precisely a graph…

数据结构与算法 · 计算机科学 2015-10-29 Jie You , Jianxin Wang , Yixin Cao

This paper studies the discovery of approximate rules in property graphs. We propose a semantically meaningful measure of error for mining graph entity dependencies (GEDs) at almost hold, to tolerate errors and inconsistencies that exist in…

We study a large family of graph covering problems, whose definitions rely on distances, for graphs of bounded cyclomatic number (that is, the minimum number of edges that need to be removed from the graph to destroy all cycles). These…

离散数学 · 计算机科学 2025-09-03 Dibyayan Chakraborty , Florent Foucaud , Anni Hakanen

A matching cut is a partition of the vertex set of a graph into two sets $A$ and $B$ such that each vertex has at most one neighbor in the other side of the cut. The MATCHING CUT problem asks whether a graph has a matching cut, and has been…

数据结构与算法 · 计算机科学 2019-05-09 Guilherme C. M. Gomes , Ignasi Sau

A new approach of graph matching is introduced in this paper, which efficiently solves the problem of graph isomorphism and subgraph isomorphism. In this paper we are introducing a new approach called SubGraD, for query graph detection in…

数据结构与算法 · 计算机科学 2012-05-23 Akshara Pande , Vivekanand Pant , S. Nigam

Graph burning is a discrete-time process that models the propagation of information in a network. Initially, we have an undirected graph of unburned vertices. At each time step, an unburned vertex is chosen to burn; additionally, unburned…

Zero forcing in a graph refers to the evolution of vertex states under repeated application of a color change rule. Typically the states are chosen to be blue and white, and a forcing set is an initial set of blue vertices such that all of…

组合数学 · 数学 2025-11-21 Daniela Ferrero , H. Tracy Hall , Leslie Hogben , Mark Hunnell , Ben Small

Feature extraction is an essential task in graph analytics. These feature vectors, called graph descriptors, are used in downstream vector-space-based graph analysis models. This idea has proved fruitful in the past, with spectral-based…

机器学习 · 计算机科学 2023-04-11 Zohair Raza Hassan , Sarwan Ali , Imdadullah Khan , Mudassir Shabbir , Waseem Abbas