Tutorial on Spatial and Spatio-Temporal Data Mining Part II ... - UFSC

Co-Location Patterns (Cao 2006)Co-location episoids in spatio-temporal dataTrajectories are spatially close in a time window and move togetherw2w1Traclus (Han, 2007)Clustering algorithm (TraClus-Trajectory Clustering)Group sub-trajectoriesDensity-basedPartition-and-group method1) each trajectory is partitioned into a set of line segments (subtrajectories)with lenght L defined by the user2) similar segments (close segments) are groupedSimilarity is based on a distance functionInteresting approach for trajectories of hurricanesMain drawback: Clustering is based on spatial distancetime is not considerd