Although the 1,000-best oracle remains at the same level over the iterations, the 1,000best average score 5 increases by 2 BLEU at the last iteration over the first 1,000-best hypotheses produced by Moses, pointing out a strong improvement of the average quality of the 1,000best hypotheses.
except for the IN configuration on medical En→Fr, multi-pass Moses does not bring improvements by itself over the Rerank baseline.