Istituto di Informatica e Telematica     
Mordacchini M., Baraglia R., Dazzi P., Ricci L., Alessi L. GROUP: A Gossip Based Building Community Protocol. In: 11th International Conference on Next Generation Wired/Wireless Networking (NEW2AN 2011) (St. Petersburg, Russia, 2011). Proceedings, pp. 496 - 507. Springer, 2011.
The detection of communities of peers characterized by similar interests is currently a challenging research area. To ease the diffusion of relevant data to interested peers, similarity based overlays define links between similar peers by exploiting a similarity function. However, existing solutions neither give a clear definition of peer communities nor define a clear strategy to partition the peers into communities. As a consequence, the spread of the information cannot be confined within a well defined region of an overlay. This paper proposes a distributed protocol for the detection of communities in a P2P network. Our approach is based on the definition of a distributed voting algorithm where each peer chooses the more similar peers among those in a limited neighbourhood range. The identifier of the most representative peer is exploited to identify a community. The paper shows the effectiveness of our approach by presenting a set of experimental results.
DOI: 10.1007/978-3-642-22875-9_45
Subject p2p networks
communities of peers
H.3.4 Systems and Software
H.3.3 Information Search and Retrieval

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