Local Hypergraph-based Nested Named Entity Recognition as Query-based Sequence Labeling. (arXiv:2204.11467v2 [cs.CL] UPDATED)

There has been a growing academic interest in the recognition of nested named
entities in many domains. We tackle the task with a novel local
hypergraph-based method: We first propose start token candidates and generate
corresponding queries with their surrounding context, then use a query-based
sequence labeling module to form a local hypergraph for each candidate. An end
token estimator is used to correct the hypergraphs and get the final
predictions. Compared to span-based approaches, our method is free of …

arxiv hypergraph labeling query