Predictor-Estimator using Multilevel Task Learning with Stack Propagation for Neural Quality Estimation Hyun Kim author Jong-Hyeok Lee author Seung-Hoon Na author 2017-09 text Proceedings of the Second Conference on Machine Translation Ondřej Bojar editor Christian Buck editor Rajen Chatterjee editor Christian Federmann editor Yvette Graham editor Barry Haddow editor Matthias Huck editor Antonio Jimeno Yepes editor Philipp Koehn editor Julia Kreutzer editor Association for Computational Linguistics Copenhagen, Denmark conference publication kim-etal-2017-predictor 10.18653/v1/W17-4763 https://aclanthology.org/W17-4763/ 2017-09 562 568