Mao-Zedong at SemEval-2023 Task 4: Label Represention Multi-Head Attention Model with Contrastive Learning-Enhanced Nearest Neighbor Mechanism for Multi-Label Text Classification Che Zhang author Ping’an Liu author Zhenyang Xiao author Haojun Fei author 2023-07 text Proceedings of the 17th International Workshop on Semantic Evaluation (SemEval-2023) Atul Kr. Ojha editor A Seza Doğruöz editor Giovanni Da San Martino editor Harish Tayyar Madabushi editor Ritesh Kumar editor Elisa Sartori editor Association for Computational Linguistics Toronto, Canada conference publication zhang-etal-2023-mao 10.18653/v1/2023.semeval-1.58 https://aclanthology.org/2023.semeval-1.58/ 2023-07 426 432