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Article overview
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Narrow scope for resolution-free community detection | | V.A. Traag
; P. Van Dooren
; Y. Nesterov
; | | Date: |
15 Apr 2011 | | Abstract: | Detecting communities in large networks has drawn much attention over the
years. While modularity remains one of the more popular methods of community
detection, the so-called resolution limit remains a significant drawback. To
overcome this issue, it was recently suggested that instead of comparing the
network to a random null model, as is done in modularity, it should be compared
to a constant factor. However, it is unclear what is meant exactly by
’resolution-free’, i.e. not suffering from the resolution limit. Furthermore,
the question remains what other methods could be classified as resolution-free.
In this paper we suggest a rigorous definition and derive some basic properties
of resolution-free methods. More importantly, we are able to prove exactly
which class of community detection methods are resolution-free. Furthermore, we
analyze which methods are not resolution-free, suggesting there is only a
limited scope for resolution-free community detection methods. Finally, we
provide such a natural formulation, and show it performs superbly. | | Source: | arXiv, 1104.3083 | | Services: | Forum | Review | PDF | Favorites | |
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