Language Models not just for Pre-training: Fast Online Neural Noisy Channel Modeling
Pre-training models on vast quantities of unlabeled data has emerged as an effective approach to improving accuracy on many NLP tasks. On the other hand, traditional machine translation has a long history of leveraging unlabeled data through noisy channel modeling...
The same idea has recently been shown to achieve strong improvements for neural machine translation. Unfortunately, na”{i}ve noisy channel modeling with modern sequence to sequence models is up to an order of magnitude slower than alternatives. We address this issue by introducing efficient approximations to make inference with the noisy channel approach as fast as strong