Positive Diversity Tuning for Machine Translation System Combination Daniel Cer author Christopher D Manning author Dan Jurafsky author 2013-08 text Proceedings of the Eighth Workshop on Statistical Machine Translation Ondrej Bojar editor Christian Buck editor Chris Callison-Burch editor Barry Haddow editor Philipp Koehn editor Christof Monz editor Matt Post editor Herve Saint-Amand editor Radu Soricut editor Lucia Specia editor Association for Computational Linguistics Sofia, Bulgaria conference publication cer-etal-2013-positive https://aclanthology.org/W13-2239/ 2013-08 320 328