Google's Neural Machine Translation System: Bridging the Gap between Human and Machine Translation
Presents GNMT, Google's deep LSTM neural machine translation system with attention, wordpieces, and low-precision inference for production use.
Neural machine translation (NMT) enables end-to-end translation but is costly to train and run and handles rare words poorly. GNMT uses a deep LSTM with 8 encoder and 8 decoder layers plus attention and residual connections, wiring the decoder's bottom layer to the encoder's top layer for parallelism. It uses low-precision inference for speed, sub-word 'wordpieces' for rare words, and length-normalized beam search with a coverage penalty. On WMT'14 benchmarks it rivals the state of the art, and human evaluation shows 60% fewer errors than Google's phrase-based system.
Based on: Google's Neural Machine Translation System: Bridging the Gap between Human and Machine Translation · arXiv.org
Curated by Aramai Editorial
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