Improving continuous space language models auxiliary features Walid Aransa author Holger Schwenk author Loïc Barrault author 2015-dec 3-4 text Proceedings of the 12th International Workshop on Spoken Language Translation: Papers Marcello Federico editor Sebastian Stüker editor Jan Niehues editor Da Nang, Vietnam conference publication aransa-etal-2015-improving https://aclanthology.org/2015.iwslt-papers.5/ 2015-dec 3-4 151 158