A Unified MRC Framework for Named Entity Recognition
ACL, pp. 5849-5859, 2020.
We propose a unified framework that is capable of handling both flat and nested NER tasks
The task of named entity recognition (NER) is normally divided into nested NER and flat NER depending on whether named entities are nested or not. Models are usually separately developed for the two tasks, since sequence labeling models, the most widely used backbone for flat NER, are only able to assign a single label to a particular t...More
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