Opinion-based Relational Pivoting for Cross-domain Aspect Term Extraction

Ayal Klein, Oren Pereg, Daniel Korat, Vasudev Lal, Moshe Wasserblat, Ido Dagan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Domain adaptation methods often exploit domain-transferable input features, a.k.a. pivots. The task of Aspect and Opinion Term Extraction presents a special challenge for domain transfer: while opinion terms largely transfer across domains, aspects change drastically from one domain to another (e.g. from restaurants to laptops). In this paper, we investigate and establish empirically a prior conjecture, which suggests that the linguistic relations connecting opinion terms to their aspects transfer well across domains and therefore can be leveraged for cross-domain aspect term extraction. We present several analyses supporting this conjecture, via experiments with four linguistic dependency formalisms to represent relation patterns. Subsequently, we present an aspect term extraction method that drives models to consider opinion–aspect relations via explicit multitask objectives. This method provides significant performance gains, even on top of a prior state-of-the-art linguistically-informed model, which are shown in analysis to stem from the relational pivoting signal.

Original languageEnglish
Title of host publicationWASSA 2022 - 12th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis, Proceedings of the Workshop
EditorsJeremy Barnes, Orphee De Clercq, Valentin Barriere, Shabnam Tafreshi, Sawsan Alqahtani, Joao Sedoc, Roman Klinger, Alexandra Balahur
PublisherAssociation for Computational Linguistics (ACL)
Pages104-112
Number of pages9
ISBN (Electronic)9781955917520
StatePublished - 2022
Event12th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis, WASSA 2022 - Dublin, Ireland
Duration: 26 May 2022 → …

Publication series

NameWASSA 2022 - 12th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis, Proceedings of the Workshop

Conference

Conference12th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis, WASSA 2022
Country/TerritoryIreland
CityDublin
Period26/05/22 → …

Bibliographical note

Publisher Copyright:
© 2022 Association for Computational Linguistics.

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