@conference {nardilearning, title = {Learning Environmental Knowledge From Task-Based-Robot Dialog}, booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation (ICRA-13)}, year = {2013}, pages = {4304-4309}, issn = {1050-4729}, doi = {10.1109/ICRA.2013.6631186}, author = {Kollar, Thomas and Perera, Vittorio and D. Nardi and Veloso, Manuela} }