The CMU Machine Translation Systems at WMT 2014

摘要

We describe the CMU systems submitted to the 2014 WMT shared translation task. We participated in two language pairs, German-English and Hindi-English. Our innovations include: a label coarsening scheme for syntactic tree-to-tree translation, a host of new discriminative features, several modules to create "synthetic translation options" that can generalize beyond what is directly observed in the training data, and a method of combining the output of multiple word aligners to uncover extra phrase pairs and grammar rules.