Dual-Channel Span for Aspect Sentiment Triplet Extraction Pan Li author Ping Li author Kai Zhang author 2023-12 text Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication li-etal-2023-dual-channel 10.18653/v1/2023.emnlp-main.17 https://aclanthology.org/2023.emnlp-main.17/ 2023-12 248 261