NICT's machine translation systems for the WMT19 similar language translation task

B Marie, R Dabre, A Fujita - … of the Fourth Conference on Machine …, 2019 - aclanthology.org
Proceedings of the Fourth Conference on Machine Translation (Volume 3 …, 2019aclanthology.org
This paper presents the NICT's participation in the WMT19 shared Similar Language
Translation Task. We participated in the Spanish-Portuguese task. For both translation
directions, we prepared state-of-the-art statistical (SMT) and neural (NMT) machine
translation systems. Our NMT systems with the Transformer architecture were trained on the
provided parallel data enlarged with a large quantity of back-translated monolingual data.
Our primary submission to the task is the result of a simple combination of our SMT and NMT …
Abstract
This paper presents the NICT’s participation in the WMT19 shared Similar Language Translation Task. We participated in the Spanish-Portuguese task. For both translation directions, we prepared state-of-the-art statistical (SMT) and neural (NMT) machine translation systems. Our NMT systems with the Transformer architecture were trained on the provided parallel data enlarged with a large quantity of back-translated monolingual data. Our primary submission to the task is the result of a simple combination of our SMT and NMT systems. According to BLEU, our systems were ranked second and third respectively for the Portuguese-to-Spanish and Spanish-to-Portuguese translation directions. For contrastive experiments, we also submitted outputs generated with an unsupervised SMT system.
aclanthology.org