SwitchOut: an Efficient Data Augmentation Algorithmfor Neural Machine Translation
Table 2: Test BLEU scores of back translation (BT) compared to and combined with SwitchOut (median of 4 runs).
['[BOLD] Method', '[BOLD] en-de']
In the context of neural MT, Sennrich et al. In connection, we compare SwitchOut against back translation. These results provide two insights. First, the gain delivered by back translation is less significant than the gain delivered by SwitchOut. Second, SwitchOut and back translation are not mutually exclusive, as one can additionally apply SwitchOut on the additional data obtained from back translation to further improve BLEU scores.