2018

Correcting Length Bias in Neural Machine Translation

Murray, Kenton, Chiang, David

Understand

We study two problems in neural machine translation (NMT).

  • First, in beam search, whereas a wider beam should in principle help translation, it often hurts NMT.
  • Second, NMT has a tendency to produce translations that are too short.
  • Here, we argue that these problems are closely related and both rooted in label bias.

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