Learning to Paraphrase Sentences to Different Complexity Levels Alison Chi author Li-Kuang Chen author Yi-Chen Chang author Shu-Hui Lee author Jason S Chang author 2023 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal chi-etal-2023-learning 10.1162/tacl_a_00606 https://aclanthology.org/2023.tacl-1.76/ 2023 11 1332 1354