Description-Based Zero-shot Fine-Grained Entity Typing

Rasha Obeidat, Xiaoli Fern, Hamed Shahbazi, Prasad Tadepalli

Abstract
Fine-grained Entity typing (FGET) is the task of assigning a fine-grained type from a hierarchy to entity mentions in the text. As the taxonomy of types evolves continuously, it is desirable for an entity typing system to be able to recognize novel types without additional training. This work proposes a zero-shot entity typing approach that utilizes the type description available from Wikipedia to build a distributed semantic representation of the types. During training, our system learns to align the entity mentions and their corresponding type representations on the known types. At test time, any new type can be incorporated into the system given its Wikipedia descriptions. We evaluate our approach on FIGER, a public benchmark entity tying dataset. Because the existing test set of FIGER covers only a small portion of the fine-grained types, we create a new test set by manually annotating a portion of the noisy training data. Our experiments demonstrate the effectiveness of the proposed method in recognizing novel types that are not present in the training data.
Anthology ID:
N19-1087
Volume:
Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers)
Month:
June
Year:
2019
Address:
Minneapolis, Minnesota
Editors:
Jill Burstein, Christy Doran, Thamar Solorio
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
807–814
Language:
URL:
https://aclanthology.org/N19-1087
DOI:
10.18653/v1/N19-1087
Bibkey:
Cite (ACL):
Rasha Obeidat, Xiaoli Fern, Hamed Shahbazi, and Prasad Tadepalli. 2019. Description-Based Zero-shot Fine-Grained Entity Typing. In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), pages 807–814, Minneapolis, Minnesota. Association for Computational Linguistics.
Cite (Informal):
Description-Based Zero-shot Fine-Grained Entity Typing (Obeidat et al., NAACL 2019)
Copy Citation:
PDF:
https://preview.aclanthology.org/fix-dup-bibkey/N19-1087.pdf
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