〇Yuya Ieiri¹, Yuu Nakajima², Reiko Hishiyama¹ (1. Waseda University, 2. Toho University)

〇Keiji Suzuki¹, Sho Yamauchi², Kouki Ogata¹, Toshio Kawashima¹ (1. Future University Hakodate, 2. KITAMI Institute of Technology)

〇Shuang Song¹, Hidenori Kawamura¹, Junichi Uchida², Hajime Saito³ (1. Hokkaido University, 2. Otaru University of Commerce, 3. Hokkaido Information University)

〇Hitoshi Shimizu¹, Tatsushi Matsubayashi², Yusuke Tanaka², Tomoharu Iwata¹, Hiroshi Sawada^1,2 (1. NTT Communication Science Laboratories, 2. NTT Service Evolution Laboratories)

〇Yuuichiro Ikeda¹, Hiroyuki Iizuka¹, Masahito Yamamoto¹ (1. Graduate School of Information Science and Technology, Hokkaido University)