Aspect-Based Sentiment Analysis using BERT

Mickel Hoang, Oskar Alija Bihorac, Jacobo Rouces


Abstract
Sentiment analysis has become very popular in both research and business due to the increasing amount of opinionated text from Internet users. Standard sentiment analysis deals with classifying the overall sentiment of a text, but this doesn’t include other important information such as towards which entity, topic or aspect within the text the sentiment is directed. Aspect-based sentiment analysis (ABSA) is a more complex task that consists in identifying both sentiments and aspects. This paper shows the potential of using the contextual word representations from the pre-trained language model BERT, together with a fine-tuning method with additional generated text, in order to solve out-of-domain ABSA and outperform previous state-of-the-art results on SemEval-2015 Task 12 subtask 2 and SemEval-2016 Task 5. To the best of our knowledge, no other existing work has been done on out-of-domain ABSA for aspect classification.
Anthology ID:
W19-6120
Volume:
Proceedings of the 22nd Nordic Conference on Computational Linguistics
Month:
September–October
Year:
2019
Address:
Turku, Finland
Editors:
Mareike Hartmann, Barbara Plank
Venue:
NoDaLiDa
SIG:
Publisher:
Linköping University Electronic Press
Note:
Pages:
187–196
Language:
URL:
https://aclanthology.org/W19-6120
DOI:
Bibkey:
Cite (ACL):
Mickel Hoang, Oskar Alija Bihorac, and Jacobo Rouces. 2019. Aspect-Based Sentiment Analysis using BERT. In Proceedings of the 22nd Nordic Conference on Computational Linguistics, pages 187–196, Turku, Finland. Linköping University Electronic Press.
Cite (Informal):
Aspect-Based Sentiment Analysis using BERT (Hoang et al., NoDaLiDa 2019)
Copy Citation:
PDF:
https://aclanthology.org/W19-6120.pdf
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