Sequence to Sequence Learning with Neural Networks

Sutskever et al., 2014, Sequence to Sequence Learning with Neural Networks (Advances in Neural Information Processing Systems 27 (NIPS 2014))

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3.3 Reversing the Source Sentences

  1. How much did reversing source sentences improve seq2seq?
    Test perplexity dropped from 5.8 to 4.7 and BLEU of decoded translations rose from 25.9 to 30.6. Unexpectedly, it also made long sentences translate much better, suggesting better memory utilization, not just more confident early predictions.

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