Beacon-based tourist information system to identify visiting trends of tourists. - Akihiro Yamaguchi; Masashi Hashimoto; Kiyohiro Urata; Yu Tanigawa; Tetsuya Nagaie; Toshitaka Maki; Toshihiko Wakahara; Akihisa Kodate; Toru Kobayashi; Noboru Sonehara (J. Robotics Netw. Artif. Life, 2017)