Encyclopedia of Social Network Analysis and Mining

2018 Edition
| Editors: Reda Alhajj, Jon Rokne

Detecting and Identifying Communities in Dynamic and Complex Networks: Definition and Survey

Reference work entry
DOI: https://doi.org/10.1007/978-1-4939-7131-2_380

Synonyms

Glossary

Community identification

Extracting a community, which a given node belongs to

Community

Locally dense subgraph in large globally sparse graph

NP

Nondeterministic polynomial time complexity

Power-law

The frequency of an event varies as a power of the event’s attribute

Definition

Complex networks such as the Internet, the World Wide Web (WWW), and various social and biological networks are viewed as large, dynamic graphs, with properties significantly different from those of the classic Erdös-Rényi random graphs. In particular, properties such as degree distribution, network distance, transitivity, and clustering coefficient have been empirically shown to diverge from classical random networks. Existence of communities is one such property inherent to these networks. A community may be defined informally as a locally dense subgraph, of a significant size, in a large, globally sparse graph....

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Copyright information

© Springer Science+Business Media LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.EMC CorpHopkintonUSA
  2. 2.Department of EECSUniv of Central FloridaOrlandoUSA

Section editors and affiliations

  • Tansel Ozyer
    • 1
  • Ozgur Ulusoy
    • 2
  1. 1.TOBB Economics and Technology UniversityAnkaraTurkey
  2. 2.Bilkent UniversityAnkaraTurkey