Learning Relational Representations by Analogy using Hierarchical Siamese Networks

Gaetano Rossiello, Alfio Gliozzo, Robert Farrell, Nicolas Fauceglia, Michael Glass


Abstract
We address relation extraction as an analogy problem by proposing a novel approach to learn representations of relations expressed by their textual mentions. In our assumption, if two pairs of entities belong to the same relation, then those two pairs are analogous. Following this idea, we collect a large set of analogous pairs by matching triples in knowledge bases with web-scale corpora through distant supervision. We leverage this dataset to train a hierarchical siamese network in order to learn entity-entity embeddings which encode relational information through the different linguistic paraphrasing expressing the same relation. We evaluate our model in a one-shot learning task by showing a promising generalization capability in order to classify unseen relation types, which makes this approach suitable to perform automatic knowledge base population with minimal supervision. Moreover, the model can be used to generate pre-trained embeddings which provide a valuable signal when integrated into an existing neural-based model by outperforming the state-of-the-art methods on a downstream relation extraction task.
Anthology ID:
N19-1327
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
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
3235–3245
Language:
URL:
https://aclanthology.org/N19-1327
DOI:
10.18653/v1/N19-1327
Bibkey:
Cite (ACL):
Gaetano Rossiello, Alfio Gliozzo, Robert Farrell, Nicolas Fauceglia, and Michael Glass. 2019. Learning Relational Representations by Analogy using Hierarchical Siamese Networks. 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 3235–3245, Minneapolis, Minnesota. Association for Computational Linguistics.
Cite (Informal):
Learning Relational Representations by Analogy using Hierarchical Siamese Networks (Rossiello et al., NAACL 2019)
Copy Citation:
PDF:
https://aclanthology.org/N19-1327.pdf
Data
T-REx