Language Translation

This example shows how one might use transformers for language translation. In particular, this implementation is loosely based on the Attention is All You Need paper.

Requirements

We will need a tokenizer for our languages. Torchtext does include a tokenizer for English, but unfortunately, we will need more languages then that. We can get these tokenizers via spacy

python3 -m spacy download <language>
python3 -m spacy download en
python3 -m spacy download de

Spacy supports many languages. For a full accounting of supported languages, please look here. This example will default from German to English.

Torchtext is also required:

pip install torchtext

Just running these commands will get you started:

pip install -r requirements.txt
python3 -m spacy download <language-you-want>

Usage

This example contains a lot of flags that you can set to change the behavior / training of the module. You can see all of them by running:

python3 main.py -h

But in general, all of the settings have "sensible" defaults; however, the default translation is to translate from German to English. To train the model, you only need to run the following command, but there is also an example for how to use any language you want:

python3 main.py
python3 main.py --src en --tgt fr # For english to french translation

For model inference, you can use this command:

python3 main.py --inference --model_path <path-to-model>

After some loading time, this will open an interactive interface where you can type in whatever sentence you are interested in translating.

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