Unsupervised Style Transfer in News Headlines via Discrete Style Space Liu Qianhui author Gao Yang author Yang Yizhe author 2023-08 text eng Proceedings of the 22nd Chinese National Conference on Computational Linguistics Maosong Sun editor Bing Qin editor Xipeng Qiu editor Jing Jiang editor Xianpei Han editor Chinese Information Processing Society of China Harbin, China conference publication qianhui-etal-2023-unsupervised https://aclanthology.org/2023.ccl-1.55/ 2023-08 626 647