Results 21 to 30 of about 557,147 (262)

Detecting image communities

open access: yes2014 12th International Workshop on Content-Based Multimedia Indexing (CBMI), 2014
In this work, we propose a novel community detection method that is specifically designed for image communities. We define image community as a coherent subgroup of images within a large set of images. In order to detect image communities, we construct an image graph by utilizing visual affinity between each image pair and then prune most of the links.
Esen, Ersin   +4 more
openaire   +2 more sources

Dynamic Communities and their Detection

open access: yesActa Cybernetica, 2011
Overlapping community detection has already become an interesting problem in data mining and also a useful technique in applications. This underlines the importance of following the lifetime of communities in real graphs. Palla et al. developed a promising method, and analyzed community evolution on two large databases [23].
András Bóta   +2 more
openaire   +1 more source

Community detection with colored edges [PDF]

open access: yes2016 IEEE International Symposium on Information Theory (ISIT), 2016
In this paper, we prove a sharp limit on the community detection problem with colored edges. We assume two equal-sized communities and there are $m$ different types of edges. If two vertices are in the same community, the distribution of edges follows $p_i=α_i\log{n}/n$ for $1\leq i \leq m$, otherwise the distribution of edges is $q_i=β_i\log{n}/n$ for
Narae Ryu, Sae-Young Chung
openaire   +2 more sources

Research on the Community Number Evolution Model of Public Opinion Based on Stochastic Competitive Learning

open access: yesIEEE Access, 2020
Human activities are usually collective, so clustering has become an important feature of human behavior. This paper studied the evolution of the community in the process of public opinion propagation so as to put forward a public opinion evolution model
Wenzheng Li   +4 more
doaj   +1 more source

Estimating Mixed Memberships in Directed Networks by Spectral Clustering

open access: yesEntropy, 2023
Community detection is an important and powerful way to understand the latent structure of complex networks in social network analysis. This paper considers the problem of estimating community memberships of nodes in a directed network, where a node may ...
Huan Qing
doaj   +1 more source

Community Detection for Correlation Matrices [PDF]

open access: yesPhysical Review X, 2015
Final version, accepted for publication on ...
MacMahon, M., Garlaschelli, D.
openaire   +5 more sources

Power Grid Partitioning Based on Functional Community Structure

open access: yesIEEE Access, 2019
Network partitioning is a popular research topic. Not all available partitioning methods are equally suitable for power grids. Community detection is a critical issue in complex network theory, and power grid is a typical type of complex network.
Chuanzhi Zhao   +5 more
doaj   +1 more source

A linear time series analysis of carbon price via a complex network approach

open access: yesFrontiers in Physics, 2022
Identifying the essential characteristics and forecasting carbon prices is significant in promoting green transformation. This study transforms the time series into networks based on China’s pilots by using the visibility graph, mining more information ...
Yuxia Hu   +3 more
doaj   +1 more source

A Relationships-based Algorithm for Detecting the Communities in Social Networks [PDF]

open access: yesInternational Journal of Web Research, 2022
Social network research analyzes the relationships between interactions, people, organizations, and entities. With the developing reputation of social media, community detection is drawing the attention of researchers.
Sevda Fotovvat   +2 more
doaj   +1 more source

Simulating Subject Communities in Case Law Citation Networks

open access: yesFrontiers in Physics, 2021
We propose and evaluate generative models for case law citation networks that account for legal authority, subject relevance, and time decay. Since Common Law systems rely heavily on citations to precedent, case law citation networks present a special ...
Jerrold Soh Tsin Howe
doaj   +1 more source

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