A Natural Language Processing System for National COVID-19 Surveillance in the US Department of Veterans Affairs Alec Chapman author Kelly Peterson author Augie Turano author Tamára Box author Katherine Wallace author Makoto Jones author 2020-07 text Proceedings of the 1st Workshop on NLP for COVID-19 at ACL 2020 Karin Verspoor editor Kevin Bretonnel Cohen editor Mark Dredze editor Emilio Ferrara editor Jonathan May editor Robert Munro editor Cecile Paris editor Byron Wallace editor Association for Computational Linguistics Online conference publication chapman-etal-2020-natural https://aclanthology.org/2020.nlpcovid19-acl.10/ 2020-07