The Karlsruhe Institute of Technology Translation Systems for the WMT 2015
Eunah Cho, Thanh-Le Ha, Jan Niehues, Teresa Herrmann, Mohammed Mediani, Yuqi Zhang, Alex Waibel · 2015
In this paper, the KIT systems submitted to the Shared Translation Task are presented.We participated in two translation directions: from German to English and from English to German.Both translations are generated using phrase-based translation systems.The performance of the systems was boosted by using language models built based on different tokens such as word, part-of-speech, and automacally generated word clusters.The difference in word order between German and English is addressed by part-of-speech and syntactic tree-based reordering models.In addition to a discriminative word lexicon, we used hypothesis rescoring using the ListNet algorithm after generating the translation with the phrase-based system.We evaluated the rescoring using only the baseline features as well as using additional computational complex features.