Browsing by Author "Halkidi, M."
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A game theoretic framework for data privacy preservation in recommender systems
Halkidi, M.; Koutsopoulos, I. (2011)We address the fundamental tradeoff between privacy preservation and high-quality recommendation stemming from a third party. Multiple users submit their ratings to a third party about items they have viewed. The third ... -
Lifetime maximization in wireless sensor networks with an estimation mission
Koutsopoulos, I.; Halkidi, M. (2009)We study the problem of maximum lifetime in wireless sensor networks that are entitled with the task of estimating an unknown parameter or process. Sensors take measurements and transfer them in multi-hop fashion to a ... -
Measurement aggregation and routing techniques for energy-efficient estimation in wireless sensor networks
Koutsopoulos, I.; Halkidi, M. (2010)Wireless sensor networks are fundamentally different from other wireless networks due to energy constraints and spatial correlation among sensor measurements. Mechanisms that efficiently compress and transport sensor data ... -
Online clustering of distributed streaming data using belief propagation techniques
Halkidi, M.; Koutsopoulos, I. (2011)Extraction of patterns out of streaming data that are generated from geographically dispersed devices is a major challenge in data mining. The sequential, distributed fashion in which data become available to the decision ...