STEP Semantic Trajectory Episodes ontology Documentation site: http://talespaiva.github.io/step Ontology URI: http://purl.org/net/step# Please cite the following papers if you use or refer to this ontology: Current version: T. P. Nogueira, R. B. Braga, C. T. de Oliveira and H. Martin, "FrameSTEP: A Framework for Annotating Semantic Trajectories Based on Episodes". Expert Systems With Applications 92C (2018) pp. 533-545. Version 1: T. P. Nogueira and H. Martin, "Querying Semantic Trajectory Episodes" in 4th ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems (MobiGIS'15), 2015. Feel free to fork and discuss Issues.