〇Ren Hosokawa¹, Yuki Ogawa¹, Kentaro Ueda², Hirohiko Suwa², Eiichi Ueda³, Tatsuo Yamashita⁴, Kota Tsubouchi⁴ (1. Dep. of Information Science and Engineering, Ritsumeikan University, 2. Nara Institute of Science and Technology, 3. Niigata University of International and Information Studies, 4. Yahoo! JAPAN Research)

〇sho inden¹, tohgoroh matsui¹ (1. chubu University)

〇Kenichi YOSHIDA¹ (1. Universty of Tsukuba)

〇kohei sugawara¹, jun hozumi¹, kiyoshi izumi¹ (1. University of Tokyo)

〇Motoki Takenaka ¹, Shoichi Urano¹ (1. Meiji University)