Strategies for Mixed-Initiative Conversation Management using Question-Answer Pairs Wilson Wong author Lawrence Cavedon author John Thangarajah author Lin Padgham author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication wong-etal-2012-strategies https://aclanthology.org/C12-1172/ 2012-12 2821 2834