We present a joint model of three core tasks in the entity analysis stack: coreference resolution (within-document clustering), named entity recognition (coarse semantic typing), and entity linking (matching to Wikipedia entities). Our model is formally a structured conditional random field. Unary factors encode local features from strong baselines for each task. We then add binary and ternary factors to capture cross-task interactions, such as the constraint that coreferent mentions have the same semantic type. On the ACE 2005 and OntoNotes datasets, we achieve state-of-theart results for all three tasks. Moreover, joint modeling improves performance on each task over strong independent baselines.
REF present a CRF model for coreference resolution, mention typing, and mention disambiguation.
A Joint Model for Entity Analysis: Coreference, Typing, and Linking
Transactions of the Association for Computational Linguistics
Transactions of the Association for Computational Linguistics
Computer Science