Dialog state tracking with attention-based sequence-to-sequence learning. - Takaaki Hori; Hai Wang; Chiori Hori; Shinji Watanabe 001; Bret Harsham; Jonathan Le Roux; John R. Hershey; Yusuke Koji; Yi Jing; Zhaocheng Zhu; Takeyuki Aikawa (SLT, 2016)