The technologies of mobile communications and ubiquitous computing pervade our society, and wireless networks sense the movement of people and vehicles, generating large volumes of mobility data. Miniaturization, wearability, pervasiveness is producing traces of our mobile activity, with increasing positioning accuracy and semantic richness: Location data from mobile phones: (GSM cell positions), GPS tracks from mobile devices receiving geo-positions from satellites, etc. The objective of the GeoPKDD project is to discover useful knowledge about human movement behavior from mobility data, while preserving the privacy of the people under observation. While pursuing this ambitious objective, the GeoPKDD project has started a new exciting multidisciplinary research area, at the crossroads of mobility, data mining, and privacy.

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