{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/leveraging-event-specific-and-chunk-span","title":"Leveraging Event Specific and Chunk Span features to Extract COVID Events from tweets","arxiv_id":"2012.10052","date":"2020-12-18","proceeding":null,"authors":["Ayush Kaushal","Tejas Vaidhya"],"abstract":"Twitter has acted as an important source of information during disasters and pandemic, especially during the times of COVID-19. In this paper, we describe our system entry for WNUT 2020 Shared Task-3. The task was aimed at automating the extraction of a variety of COVID-19 related events from Twitter, such as individuals who recently contracted the virus, someone with symptoms who were denied testing and believed remedies against the infection. The system consists of separate multi-task models for slot-filling subtasks and sentence-classification subtasks while leveraging the useful sentence-level information for the corresponding event. The system uses COVID-Twitter-Bert with attention-weighted pooling of candidate slot-chunk features to capture the useful information chunks. The system ranks 1st at the leader-board with F1 of 0.6598, without using any ensembles or additional datasets. The code and trained models are available at this https URL.","url_abs":"https://arxiv.org/abs/2012.10052v1","url_pdf":"https://arxiv.org/pdf/2012.10052v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"abstracts"},"code_links":[{"paper_slug":"leveraging-event-specific-and-chunk-span","repo_url":"https://github.com/Ayushk4/extract_covid_entity","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"pytorch","reach":null}],"tasks":[{"task_slug":"extracting-covid-19-events-from-twitter","task_name":"Extracting COVID-19 Events from Twitter"},{"task_slug":"sentence","task_name":"Sentence"},{"task_slug":"slot-filling-1","task_name":"slot-filling"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[{"leaderboard":"/sota/extracting-covid-19-events-from-twitter-on-w","task":"Extracting COVID-19 Events from Twitter","dataset":"W-NUT 2020 Shared Task-3","model":"-","rank_in_archive_order":1,"of":1,"metrics":{"F1":"0.66"},"uses_additional_data":false}],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}