Query Lan Guages

A Unified MRC Framework for Named Entity Recognition

is a fairly common phenomenon in natural lan-guages. The task of flat NER is commonly formalized as a sequence labeling task: a sequence labeling model (Chiu and Nichols,2016;Ma and Hovy, 2016;Devlin et al.,2018) is trained to assign a single tagging class to each unit within a se-quence of tokens. This formulation is unfortu-

  Gauge