RETURNN as a Generic Flexible Neural Toolkit with Application to Translation and Speech Recognition Albert Zeyer author Tamer Alkhouli author Hermann Ney author 2018-07 text Proceedings of ACL 2018, System Demonstrations Fei Liu editor Thamar Solorio editor Association for Computational Linguistics Melbourne, Australia conference publication zeyer-etal-2018-returnn 10.18653/v1/P18-4022 https://aclanthology.org/P18-4022/ 2018-07 128 133