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OpenNMT: Open-Source Neural Machine Translation

OpenNMT is a full-featured, open-source (MIT) neural machine translation system utilizing the Torch mathematical toolkit.

The system is designed to be simple to use and easy to extend , while maintaining efficiency and state-of-the-art translation accuracy. Features include:

  • Speed and memory optimizations for high-performance GPU training.
  • Simple general-purpose interface, only requires and source/target data files.
  • C++ implementation of the translator for easy deployment.
  • Extensions to allow other sequence generation tasks such as summarization and image captioning.

Installation

OpenNMT only requires a vanilla Torch install with few dependencies. Alternatively there is a (CUDA) Docker container.

Dependencies

  • nn
  • nngraph
  • tds
  • penlight

GPU training requires:

  • cunn
  • cutorch

Multi-GPU training additionally requires:

  • threads

Quickstart

OpenNMT consists of three commands:

  1. Preprocess the data.

th preprocess.lua -train_src data/src-train.txt -train_tgt data/tgt-train.txt -valid_src data/src-val.txt -valid_tgt data/tgt-val.txt -save_data data/demo

  1. Train the model.

th train.lua -data data/demo-train.t7 -save_model model

  1. Translate sentences.

th translate.lua -model model_final.t7 -src data/src-test.txt -output pred.txt

See the guide for more details.

Documentation