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  Multi-agent random walks for local clustering on graphs

Alamgir, M., & von Luxburg, U. (2010). Multi-agent random walks for local clustering on graphs. In G. Webb, B. Liu, C. Zhang, D. Gunopulos, & X. Wu (Eds.), IEEE International Conference on Data Mining (ICDM 2010) (pp. 18-27). Piscataway, NJ, USA: IEEE.

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 Creators:
Alamgir, M1, 2, Author           
von Luxburg, U1, 2, Author           
Affiliations:
1Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497795              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: We consider the problem of local graph clustering where the aim is to discover the local cluster corresponding to a point of interest. The most popular algorithms to solve this problem start a random walk at the point of interest and let it run until some stopping criterion is met. The vertices visited are then considered the local cluster. We suggest a more powerful alternative, the multi-agent random walk. It consists of several ``agents'' connected by a fixed rope of length l. All agents move independently like a standard random walk on the graph, but they are constrained to have distance at most l from each other. The main insight is that for several agents it is harder to simultaneously travel over the bottleneck of a graph than for just one agent. Hence, the multi-agent random walk has less tendency to mistakenly merge two different clusters than the original random walk. In our paper we analyze the multi-agent random walk theoretically and compare it experimentally to the major local graph clustering algorithms from the literature. We find that our multi-agent random walk consistently outperforms these algorithms.

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 Dates: 2010-12
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1109/ICDM.2010.87
 Degree: -

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Title: IEEE International Conference on Data Mining (ICDM 2010)
Place of Event: Sydney, Australia
Start-/End Date: 2010-12-13 - 2010-12-17

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Title: IEEE International Conference on Data Mining (ICDM 2010)
Source Genre: Proceedings
 Creator(s):
Webb, GI, Editor
Liu, B, Editor
Zhang, C, Editor
Gunopulos, D, Editor
Wu, X, Editor
Affiliations:
-
Publ. Info: Piscataway, NJ, USA : IEEE
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 18 - 27 Identifier: ISBN: 978-1-4244-9131-5