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arXiv · 2402.11454

An Approach for Addressing Internally-Disconnected Communities in Louvain Algorithm

Subhajit Sahu
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Abstract

Community detection is the problem of identifying densely connected clusters within a network. While the Louvain algorithm is commonly used for this task, it can produce internally-disconnected communities. To address this, the Leiden algorithm was introduced. This technical report introduces GSP-Louvain, a parallel algorithm based on Louvain, which mitigates this issue. Running on a system with two 16-core Intel Xeon Gold 6226R processors, GSP-Louvain outperforms Leiden, NetworKit Leiden, and cuGraph Leiden by 391x, 6.9x, and 2.6x respectively, processing 410M edges per second on a 3.8B edge graph. Furthermore, GSP-Louvain improves performance at a rate of 1.5x for every doubling of threads.

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Subhajit Sahu. 2024-02-18. An Approach for Addressing Internally-Disconnected Communities in Louvain Algorithm. https://arxiv.org/abs/2402.11454

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