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OpenNMT: Open-Source Neural Machine Translation

This is an extension of OpenNMT, which includes the code for the SR-NMT that has been introduced in Deep Neural Machine Translation with Weakly-Recurrent Units.

Quickstart

Some useful tools:

The example below uses the Moses tokenizer (http://www.statmt.org/moses/) to prepare the data and the moses BLEU script for evaluation.

wget https://raw.githubusercontent.com/moses-smt/mosesdecoder/master/scripts/tokenizer/tokenizer.perl
wget https://raw.githubusercontent.com/moses-smt/mosesdecoder/master/scripts/share/nonbreaking_prefixes/nonbreaking_prefix.de
wget https://raw.githubusercontent.com/moses-smt/mosesdecoder/master/scripts/share/nonbreaking_prefixes/nonbreaking_prefix.en
sed -i "s/$RealBin\/..\/share\/nonbreaking_prefixes//" tokenizer.perl
wget https://raw.githubusercontent.com/moses-smt/mosesdecoder/master/scripts/generic/multi-bleu.perl

A simple pipeline:

Download and preprocess the data as you would do for OpenNMT-py. Then use preprocess.py, train.sh and translate.sh for the actual training and translation.

1) Preprocess the data.

python preprocess.py -train_src /path/to/data/train.src -train_tgt /path/to/data/train.tgt -valid_src /path/to/data/valid.src -valid_tgt /path/to/data/valid.tgt -save_data /path/to/data/data

2) Train the model.

sh train.sh num_layers num_gpu

3) Translate sentences.

sh translate.sh model_name test_file num_gpu

4) Evaluate.

sh eval.sh hypothesys target_language /path/to/test/tokenized.tgt

This evaluation is consistent with the one used in the paper and was taken from Tensor2Tensor.

New versions

We are working to integrate SR-NMT inside:

Citation

If you use this software, please cite:

@inproceedings{digangi2018deep,
  author    = {Di Gangi, Mattia A and Federico, Marcello},
  title     = {Deep Neural Machine Translation with Weakly-Recurrent Units},
  booktitle = {Proceedings of the 21st Annual Conference of the European Association for Machine Translation},
  pages     = {119--128},
  year      = {2018}
}

OpenNMT technical report

@inproceedings{opennmt,
  author    = {Guillaume Klein and
               Yoon Kim and
               Yuntian Deng and
               Jean Senellart and
               Alexander M. Rush},
  title     = {OpenNMT: Open-Source Toolkit for Neural Machine Translation},
  booktitle = {Proc. ACL},
  year      = {2017},
  url       = {https://doi.org/10.18653/v1/P17-4012},
  doi       = {10.18653/v1/P17-4012}
}

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Implementation in pytorch of SR-NMT https://arxiv.org/abs/1805.04185v1

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