Back-Translation Sampling by Targeting Difficult Words in Neural Machine Translation
Table 2: English→German translation quality (Bleu) of systems using forward and reverse models for generating synthetic data.
['[EMPTY]', '[BOLD] Size', '[BOLD] 2014', '[BOLD] 2015', '[BOLD] 2016', '[BOLD] 2017']
We perform a small experiment to measure whether back-translating from source to target is also beneficial for improving translation quality. This is in contrast to the findings of \newciteLambert:2011:ITM:2132960.2132997 for PBMT systems where they show that using synthetic target data does not lead to improvements in translation quality.