Hierarchical Entity Typing via Multi-level Learning to Rank

ACL 2020  ·  Tongfei Chen, Yunmo Chen, Benjamin Van Durme ·

We propose a novel method for hierarchical entity classification that embraces ontological structure at both training and during prediction. At training, our novel multi-level learning-to-rank loss compares positive types against negative siblings according to the type tree... During prediction, we define a coarse-to-fine decoder that restricts viable candidates at each level of the ontology based on already predicted parent type(s). We achieve state-of-the-art across multiple datasets, particularly with respect to strict accuracy. read more

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