HLTRI at W-NUT 2020 Shared Task-3: COVID-19 Event Extraction from Twitter Using Multi-Task Hopfield Pooling Maxwell Weinzierl author Sanda Harabagiu author 2020-11 text Proceedings of the Sixth Workshop on Noisy User-generated Text (W-NUT 2020) Wei Xu editor Alan Ritter editor Tim Baldwin editor Afshin Rahimi editor Association for Computational Linguistics Online conference publication weinzierl-harabagiu-2020-hltri 10.18653/v1/2020.wnut-1.80 https://aclanthology.org/2020.wnut-1.80/ 2020-11 530 538