Contrastive Learning of Sentence Representations Hefei Qiu author Wei Ding author Ping Chen author 2021-12 text Proceedings of the 18th International Conference on Natural Language Processing (ICON) Sivaji Bandyopadhyay editor Sobha Lalitha Devi editor Pushpak Bhattacharyya editor NLP Association of India (NLPAI) National Institute of Technology Silchar, Silchar, India conference publication qiu-etal-2021-contrastive https://aclanthology.org/2021.icon-main.33/ 2021-12 277 283