COVID-19 Claim Radar: A Structured Claim Extraction and Tracking System
Table of Contents
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Overview
The COVID-19 pandemic has received extensive media coverage, with a vast variety of claims made about different aspects of the virus. In order to track these claims, we present COVID-19 Claim Radar, a system that automatically extracts claims relating to COVID-19 in news articles. We provide a comprehensive structured view of such claims, with rich attributes (such as claimers and their affiliations) and associated knowledge elements (such as events, relations and entities). Further, we use this knowledge to identify inter-claim connections such as equivalent, supporting, or refuting relations, with shared structural evidence like claimers, similar centroid events and arguments. In order to consolidate claim structures at the corpus-level, we leverage Wikidata as the hub to merge coreferential knowledge elements, and apply machine translation to aggregate claims from news articles in multiple languages. The system provides users with a comprehensive exposure to COVID-19 related claims, their associated knowledge elements, and related connections to other claims. The system is publicly available on GitHub and DockerHub, with instructional video.
Requirements
Docker
The docker is blendernlp/covid-claim-radar.
GPU support
Please provide GPU ids in the running script extract.sh.
Data
Our experimental data is LDC2021E11.
Code
Please find the claim extraction and claim-claim relation detection code under claim_detection, and knowledge extraction code under knowledge_extraction.