Hierarchical Event Grounding

Event grounding aims at linking mention references in text corpora to events from a knowledge base (KB). Previous work on this task focused primarily single KB event, thereby overlooking the hierarchical aspects of events. Events documents are typically described various levels spatio-temporal granularity. These relations utilized downstream tasks narrative understanding and schema construction. In work, we present an extension event that requires tackling structures KB. Our proposed involves reference set labels subevent hierarchy We propose retrieval methodology leverages through auxiliary loss. On automatically created multilingual dataset Wikipedia Wikidata, our experiments demonstrate effectiveness loss against retrieve re-rank baselines. Furthermore, systems' ability aid discovery among unseen Code is available https://github.com/JefferyO/Hierarchical-Event-Grounding