Trading Syntax Trees for Wordpieces: Target-oriented Opinion Words Extraction with Wordpieces and Aspect Enhancement Samuel Mensah author Kai Sun author Nikolaos Aletras author 2023-07 text Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication mensah-etal-2023-trading 10.18653/v1/2023.acl-short.86 https://aclanthology.org/2023.acl-short.86/ 2023-07 999 1007