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. The synthetic data generated by the improved English-German backward model was used to train a forward model which out-performed another forward model trained using standard back-translation by 2.7 BLEU .
After revision:  The technique was shown to improve baseline low resource IWSLT'14 English-German and IWSLT'15 English-Vietnamese low resource neural machine translation showed that the proposed approach outperforms baselines that use the traditional back-translation by 2.7 BLEU .