Specificity measures and reference Albert Gatt author Nicolás Marín author Gustavo Rivas-Gervilla author Daniel Sánchez author 2018-11 text Proceedings of the 11th International Conference on Natural Language Generation Emiel Krahmer editor Albert Gatt editor Martijn Goudbeek editor Association for Computational Linguistics Tilburg University, The Netherlands conference publication gatt-etal-2018-specificity 10.18653/v1/W18-6562 https://aclanthology.org/W18-6562/ 2018-11 492 502