An Empirical Evaluation of Data-Driven Paraphrase Generation Techniques Donald Metzler author Eduard Hovy author Chunliang Zhang author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication metzler-etal-2011-empirical https://aclanthology.org/P11-2096/ 2011-06 546 551