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Cited by 302

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Clique Relaxations in Social Network Analysis: The Maximum k-Plex Problem

Balasundaram, Balabhaskar, Butenko, Sergiy, Hicks, Illya V.·2011·Operations Research

Abstract

This paper introduces and studies the maximum k-plex problem, which arises in social network analysis and has wider applicability in several important areas employing graph-based data mining. After establishing NP-completeness of the decision version of the problem on arbitrary graphs, an integer programming formulation is presented, followed by a polyhedral study to identify combinatorial valid inequalities and facets. A branch-and-cut algorithm is implemented and tested on proposed benchmark instances. An algorithmic approach is developed exploiting the graph-theoretic properties of a k-plex that is effective in solving the problem to optimality on very large, sparse graphs such as the power law graphs frequently encountered in the applications of interest.

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Metadata

Authors
Balasundaram, B., Butenko, S., & Hicks, I. V.
Venue
Operations Research
Published
2011-02
Volume
59
Issue
1
Pages
133-142
ISSN
  • 0030-364X (ISSN-L)
  • 1526-5463
OpenAlex
W2169088933
Cited by
302
References
4
FWCI
14.65
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Clique Relaxations in Social Network Analysis: The Maximum k-Plex Problem. https://app.cochat.ai/papers/10.1287/opre.1100.0851
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Balasundaram, B., Butenko, S., & Hicks, I. V. (2011). Clique Relaxations in Social Network Analysis: The Maximum k-Plex Problem. Operations Research. https://doi.org/10.1287/opre.1100.0851

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