On A Strictly Convex IBM Model 1 Andrei Simion author Michael Collins author Cliff Stein author 2015-09 text Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing Lluís Màrquez editor Chris Callison-Burch editor Jian Su editor Association for Computational Linguistics Lisbon, Portugal conference publication simion-etal-2015-strictly 10.18653/v1/D15-1023 https://aclanthology.org/D15-1023/ 2015-09 221 226