Jesús Carretero, Florin Isaila, Anne-Marie Kermarrec, François Taïani, and Juan M. Tirado

Geology: Modular Georecommendation In Gossip-Based Social Networks

IEEE 32nd International Conference on Distributed Computing Systems (ICDCS 2012), Macau, China, June, IEEE Computer Society, 2012 (10p.)

Geolocated social networks, that combine traditional social networking features with geolocation information, have grown tremendously over the last few years. Yet, very few works have looked at implementing geolocated social networks in a fully distributed manner, a promising avenue to handle the growing scalability challenges of these systems. In this paper, we focus on georecommendation, and show that existing decentralized recommendation mechanisms perform in fact poorly on geodata. We propose a set of novel gossip-based mechanisms to address this problem, which we capture in a modular similarity framework called Geology. The resulting platform is lightweight, efficient, and scalable, and we demonstrate its superiority in terms of recommendation quality and communication overhead on a real data set of 15,694 users from Foursquare, a leading geolocated social network.

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