| Conclusion | We treat word alignment as a parsing problem, and by taking advantage of English syntax and the hypergraph structure of our search algorithm, we report significant increases in both F-measure and BLEU score over standard baselines in use by most state-of-the-art MT systems today. |
| Experiments | We tune the the parameters of the MT system on a held-out development corpus of 1,172 parallel sentences, and test on a held-out parallel corpus of 746 parallel sentences. |
| Related Work | (2009) confirm and extend these results, showing BLEU improvement for a hierarchical phrase-based MT system on a small Chinese corpus. |