Supertagging the Long Tail with Tree-Structured Decoding of Complex Categories

@article{Prange2021SupertaggingTL,
  title={Supertagging the Long Tail with Tree-Structured Decoding of Complex Categories},
  author={Jakob Prange and Nathan Schneider and Vivek Srikumar},
  journal={Transactions of the Association for Computational Linguistics},
  year={2021},
  volume={9},
  pages={243-260}
}
Abstract Although current CCG supertaggers achieve high accuracy on the standard WSJ test set, few systems make use of the categories’ internal structure that will drive the syntactic derivation during parsing. The tagset is traditionally truncated, discarding the many rare and complex category types in the long tail. However, supertags are themselves trees. Rather than give up on rare tags, we investigate constructive models that account for their internal structure, including novel methods… 
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