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arXiv · 1406.2545

A Flexible Fitness Function for Community Detection in Complex Networks

Fabricio Olivetti de Franca·Guilherme Palermo Coelho
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Abstract

Most community detection algorithms from the literature work as optimization tools that minimize a given \textit{fitness function}, while assuming that each node belongs to a single community. Since there is no hard concept of what a community is, most proposed fitness functions focus on a particular definition. As such, these functions do not always lead to partitions that correspond to those observed in practice. This paper proposes a new flexible fitness function that allows the identification of communities with distinct characteristics. Such flexibility was evaluated through the adoption of an immune-inspired optimization algorithm, named cob-aiNet[C], to identify both disjoint and overlapping communities in a set of benchmark networks. The results have shown that the obtained partitions are much closer to the ground-truth than those obtained by the optimization of the modularity function.

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Fabricio Olivetti de Franca, Guilherme Palermo Coelho. 2014-06-10. A Flexible Fitness Function for Community Detection in Complex Networks. https://arxiv.org/abs/1406.2545

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