Synonyms
Community discovery; Dense subgraph; Social networks; Weblike networks
- Community:
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Locally dense subgraph in large globally sparse graph
- Community Identification:
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Extracting a community, which a given node belongs to
- Power Law:
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The frequency of an event varies as a power of the event's attribute
- NP:
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Nondeterministic polynomial time complexity
Definition
A community may be defined informally as a locally dense subgraph, of a significant size, in a large, globally sparse graph. Communities do not exist in the classical Erdos-Renyi random graph, but they do exist in graphs representing the Internet, the World Wide Web (WWW), and numerous social and biological systems. These graphs representing the real-world complex systems are large, dynamic, and random and are termed as complex networks. At least two different questions may be posed about the community structure in large graphs: (i) Given a graph, identify or extract all (i.e., sets of nodes that constitute) communities and (ii)...
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Vasudevan, M., Deo, N. (2014). Community Identification in Dynamic and Complex Networks. In: Alhajj, R., Rokne, J. (eds) Encyclopedia of Social Network Analysis and Mining. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6170-8_380
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DOI: https://doi.org/10.1007/978-1-4614-6170-8_380
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