Learning when to point: A data-driven approach Albert Gatt author Patrizia Paggio author 2014-08 text Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers Junichi Tsujii editor Jan Hajic editor Dublin City University and Association for Computational Linguistics Dublin, Ireland conference publication gatt-paggio-2014-learning https://aclanthology.org/C14-1189/ 2014-08 2007 2017