Hitachi at SemEval-2022 Task 10: Comparing Graph- and Seq2Seq-based Models Highlights Difficulty in Structured Sentiment Analysis Gaku Morio author Hiroaki Ozaki author Atsuki Yamaguchi author Yasuhiro Sogawa author 2022-07 text Proceedings of the 16th International Workshop on Semantic Evaluation (SemEval-2022) Guy Emerson editor Natalie Schluter editor Gabriel Stanovsky editor Ritesh Kumar editor Alexis Palmer editor Nathan Schneider editor Siddharth Singh editor Shyam Ratan editor Association for Computational Linguistics Seattle, United States conference publication morio-etal-2022-hitachi 10.18653/v1/2022.semeval-1.188 https://aclanthology.org/2022.semeval-1.188/ 2022-07 1349 1359