---
pipeline_tag: translation
language: multilingual
library_name: transformers
license: cc-by-nc-sa-4.0
---

<div align="center">

<h1 style="font-family: 'Arial', sans-serif; font-size: 28px; font-weight: bold; color: black;">
    🛡️ Guardians of the Machine Translation Meta-Evaluation:<br>
    Sentinel Metrics Fall In!
</h1>

</div>

<div style="display:flex; justify-content: center; align-items: center; flex-direction: row;">
    <a href="https://2024.aclweb.org/"><img src="http://img.shields.io/badge/ACL-2024-4b44ce.svg"></a> &nbsp; &nbsp; 
    <a href="https://aclanthology.org/"><img src="http://img.shields.io/badge/paper-ACL--anthology-B31B1B.svg"></a> &nbsp; &nbsp; 
    <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/"><img src="https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-lightgrey.svg"></a>
</div>
<div style="display:flex; justify-content: center; align-items: center; flex-direction: row;">
    <a href="https://huggingface.co/collections/sapienzanlp/mt-sentinel-metrics-66ab643b32aab06f3157e5c1"><img src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Collection-FCD21D"></a> &nbsp; &nbsp;
    <a href="https://github.com/SapienzaNLP/guardians-mt-eval"><img src="https://img.shields.io/badge/GitHub-Repo-121013?logo=github&logoColor=white"></a> &nbsp; &nbsp;
</div>

This repository contains the **SENTINEL<sub>REF</sub>** metric model trained on Direct Assessments (DA) annotations. For details on how to use our sentinel metric models, check our [GitHub repository](https://github.com/SapienzaNLP/guardians-mt-eval).

## Usage

After having installed our repository package, you can use this model within Python in the following way:

```python
from sentinel_metric import download_model, load_from_checkpoint

model_path = download_model("sapienzanlp/sentinel-ref-da")
model = load_from_checkpoint(model_path)

data = [
    {"ref": "There's no place like home."},
    {"ref": "Toto, I've a feeling we're not in Kansas anymore."}
]

output = model.predict(data, batch_size=8, gpus=1)
```

Output:
```python
# Segment scores
>>> output.scores
[0.26086926460266113, 0.17275342345237732]

# System score
>>> output.system_score
0.21681134402751923
```

## Cite this work
This work has been published at [ACL 2024 (main conference)](https://2024.aclweb.org/program/main_conference_papers/). If you use any part, please consider citing our paper as follows:

```bibtex
@inproceedings{perrella-etal-2024-guardians,
    title = "Guardians of the Machine Translation Meta-Evaluation: Sentinel Metrics Fall In!",
    author = "Perrella, Stefano and
      Proietti, Lorenzo  and
      Scirè, Alessandro and
      Barba, Edoardo and
      Navigli, Roberto",
        booktitle = "Proceedings of the Annual Meeting of the Association for Computational Linguistics (ACL 2024)",
    year      = "2024",
    address   = "Bangkok, Thailand",
    publisher = "Association for Computational Linguistics",
}
```

## License
This work is licensed under [Creative Commons Attribution-ShareAlike-NonCommercial 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/).