〇Natsuki Miyahara¹, Taro Tezuka², Yasushi Nakauchi³ (1. Graduate School of Library Information and Media Studies, University of Tsukuba, 2. Faculty of Library Information and Media Science, University of Tsukuba, 3. Faculty of Engineering, Information and Systems, University of Tsukuba)

〇Masatoshi Kanbata¹, Ryohei Orihara¹, Yuichi Sei¹, Yasuyuki Tahara¹, Akihiko Ohsuga¹ (1. The University of Electro-Communications)

〇Nao Fujimoto¹, Junya Morita¹, Toru Okubo¹, Nobuhiko Obayashi¹, Takayasu Shirai¹ (1. KAJIMA CORPORATION)

〇Noriyasu Omata¹, Yoshihiro Nakamura², Susumu Shirayama¹ (1. School of Engineering, The University of Tokyo, 2. Faculty of Engineering, The University of Tokyo)

daisuke moriwaki¹, 〇isshu munemasa², toshikazu fukami¹ (1. CyberAgent, Inc., 2. Meiji University)