Web and Wireless Geographical Information Systems 17th International Symposium, W2GIS 2019, Kyoto, Japan, May 16-17, 2019, Proceedings - Kawai, Yukiko; Kawai, Yukiko; Storandt, Sabine; Storandt, Sabine; Sumiya, Kazutoshi; Sumiya, Kazutoshi (Springer International Publishing : Imprint: Springer, 2019)