Investigating the Challenges of Temporal Relation Extraction from Clinical Text Diana Galvan author Naoaki Okazaki author Koji Matsuda author Kentaro Inui author 2018-10 text Proceedings of the Ninth International Workshop on Health Text Mining and Information Analysis Alberto Lavelli editor Anne-Lyse Minard editor Fabio Rinaldi editor Association for Computational Linguistics Brussels, Belgium conference publication galvan-etal-2018-investigating 10.18653/v1/W18-5607 https://aclanthology.org/W18-5607/ 2018-10 55 64