TY - CONF T1 - Where Have You Been Today? Annotating Trajectories with DayTag T2 - International Conference on Spatial and Spatio-temporal Databases (SSTD) Y1 - 2013 A1 - S Rinzivillo A1 - Fernando de Lucca Siqueira A1 - Lorenzo Gabrielli A1 - Chiara Renso A1 - Vania Bogorny JF - International Conference on Spatial and Spatio-temporal Databases (SSTD) ER -