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license: apache-2.0
datasets:
- Helsinki-NLP/tatoeba
- openlanguagedata/flores_plus
language:
- ca
- en
metrics:
- bleu
- comet
- chrf
pipeline_tag: translation
---
# OPUS-MT-tiny-eng-cat
Distilled model from a Tatoeba-MT Teacher: [Tatoeba-MT-models/deu+eng+fra+por+spa-roa/opusTCv20230926max50+bt+jhubc_transformer-big_2024-05-30](https://object.pouta.csc.fi/Tatoeba-MT-models/deu+eng+fra+por+spa-roa/opusTCv20230926max50+bt+jhubc_transformer-big_2024-05-30.zip), which has been trained on the [Tatoeba](https://github.com/Helsinki-NLP/Tatoeba-Challenge/tree/master/data) dataset.
We used the [OpusDistillery](https://github.com/Helsinki-NLP/OpusDistillery) to train new a new student with the tiny architecture, with a regular transformer decoder.
For training data, we used [Tatoeba](https://github.com/Helsinki-NLP/Tatoeba-Challenge/tree/master/data).
The configuration file fed into OpusDistillery can be found [here](https://github.com/Helsinki-NLP/OpusDistillery/blob/main/configs/opustranslate_hf/config.op.en-ca.yml).
## How to run
```python
from transformers import MarianMTModel, MarianTokenizer
model_name = "Helsinki-NLP/opus-mt_tiny_eng-cat"
tokenizer = MarianTokenizer.from_pretrained(model_name)
model = MarianMTModel.from_pretrained(model_name)
tok = tokenizer("Barcelona's official languages are Catalan and Spanish.", return_tensors="pt").input_ids
output = model.generate(tok)[0]
tokenizer.decode(output, skip_special_tokens=True)
```
## Benchmarks
### Teacher
| testset | BLEU | chr-F | COMET|
|-----------------------|-------|-------|-------|
| Flores+ | 42.6 | 66.8 | 0.8578 |
### Student
| testset | BLEU | chr-F | COMET |
|-----------------------|-------|-------|-------|
| Flores+ | 40.3 | 65.1 | 0.8476 |
## Marian models
We also provide Marian-compatible versions of this model. To use them, compile [Marian](https://marian-nmt.github.io/quickstart/) and run decoding with `marian-decoder`, for example:
```bash
marian-decoder \
-i input.txt \
-c final.model.npz.best-perplexity.npz.decoder.yml \
-m final.model.npz.best-perplexity.npz \
-v vocab.spm vocab.spm
|