Landmark-Based Location Belief Tracking in a Spoken Dialog System Yi Ma author Antoine Raux author Deepak Ramachandran author Rakesh Gupta author 2012-07 text Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue Gary Geunbae Lee editor Jonathan Ginzburg editor Claire Gardent editor Amanda Stent editor Association for Computational Linguistics Seoul, South Korea conference publication ma-etal-2012-landmark https://aclanthology.org/W12-1624/ 2012-07 169 178