Andre Salvaro Furtado, Luis Otávio Alvares, Nikos Pelekis, Yannis Theodoridis, Vania Bogorny International Journal of Geographical Information Science 32(1): 140-168 (2018) publication: https://www.tandfonline.com/doi/full/10.1080/13658816.2017.1372763 code: https://github.com/bigdata-ufsc/furtado-2018-ums data:Crawdad ProjectGeolife