Before revision:  The technique was shown to improve baseline low resource IWSLT'14 English-German and IWSLT'15 English-Vietnamese backward translation models by 11.06 and 1.5 BLEUs respectively.
After revision:  The technique was shown to improve baseline low resource IWSLT'14 English-German and English-Vietnamese backward translation models by 11.06 and 1.5 BLEUs respectively.