Edinburgh Neural Machine Translation Systems for WMT 16
Table 4: Czech→English translation results (Bleu) on dev (newstest2015) and test (newstest2016), after continued training with increasing amounts of back-translated synthetic data. For each row, training was continued from the baseline model until convergence.
['system', 'best single dev', 'best single test', 'ensemble4 dev', 'ensemble4 test']
We also show in We see that most of the gain from back-translation comes with the first batch, but increasing the amount of back-translated data does gradually improve performance.