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Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss
论文
论文
发布时间2018-03-09
发表NAACL 2018 6 · arXiv:1803.03378
作者:Peng Xu,Denilson Barbosa
详细介绍
The task of Fine-grained Entity Type Classification (FETC) consists of
assigning types from a hierarchy to entity mentions in text. Existing methods
rely on distant supervision and are thus susceptible to noisy labels that can
be out-of-context or overly-specific for the training sentence. Previous
methods that attempt to address these issues do so with heuristics or with the
help of hand-crafted features. Instead, we propose an end-to-end solution with
a neural network model that uses a variant of cross- entropy loss function to
handle out-of-context labels, and hierarchical loss normalization to cope with
overly-specific ones. Also, previous work solve FETC a multi-label
classification followed by ad-hoc post-processing. In contrast, our solution is
more elegant: we use public word embeddings to train a single-label that
jointly learns representations for entity mentions and their context. We show
experimentally that our approach is robust against noise and consistently
outperforms the state-of-the-art on established benchmarks for the task.
代码仓库 (3)
billy-inn/NFETC官方TensorFlow
YoungXiyuan/DCAPyTorch
ZacharyChenpk/Local_ETHZPyTorch
