Ontuition: intuitive data exploration via ontology navigation - Marco D. Adelfio; Michael D. Lieberman; Hanan Samet; Kashif A. Firozvi (18th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, ACM-GIS 2010, November 3-5, 2010, San Jose, CA, USA, Proceedings, 2010)