# projecte-aina /roberta-large-ca-paraphrase

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language:
- ca
tags:
- catalan
- paraphrase
- textual entailment
datasets:
- projecte-aina/Parafraseja
metrics:
- combined_score
- f1
- accuracy
inference:
parameters:
aggregation_strategy: first
model-index:
- name: roberta-large-ca-paraphrase
results:
type: text-classification
dataset:
type: projecte-aina/Parafraseja
name: Parafraseja
metrics:
- name: F1
type: f1
value: 0.86678
- name: Accuracy
type: accuracy
value: 0.86175
- name: combined_score
type: combined_score
value: 0.86426
widget:
- text: Tinc un amic a Manresa. A Manresa hi viu un amic meu.
- text: >-
La dona va anar a l'hotel en moto. Ella va agafar el cotxe per anar a
l'hotel.


# Catalan BERTa (roberta-large-ca-v2) finetuned for Paraphrase Detection

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## Model description

The roberta-large-ca-paraphrase is a Paraphrase Detection model for the Catalan language fine-tuned from the roberta-large-ca-v2 model, a RoBERTa base model pre-trained on a medium-size corpus collected from publicly available corpora and crawlers.

## Intended uses and limitations

roberta-large-ca-paraphrase model can be used to detect if two sentences are in a paraphrase relation. The model is limited by its training dataset and may not generalize well for all use cases.

## How to use

Here is how to use this model:

from transformers import pipeline
from pprint import pprint

nlp = pipeline("text-classification", model="projecte-aina/roberta-large-ca-paraphrase")
example = "Tinc un amic a Manresa. </s></s> A Manresa hi viu un amic meu."

paraphrase = nlp(example)
pprint(paraphrase)


## Limitations and bias

At the time of submission, no measures have been taken to estimate the bias embedded in the model. However, we are well aware that our models may be biased since the corpora have been collected using crawling techniques on multiple web sources. We intend to conduct research in these areas in the future, and if completed, this model card will be updated.

## Training

### Training data

We used the Paraphase Detection dataset in Catalan Parafraseja for training and evaluation.

### Training procedure

The model was trained with a batch size of 16 and a learning rate of 5e-5 for 5 epochs. We then selected the best checkpoint using the downstream task metric in the corresponding development set and then evaluated it on the test set.

## Evaluation

### Variable and metrics

This model was finetuned maximizing the combined_score.

## Evaluation results

We evaluated the roberta-large-ca-paraphrase on the Parafraseja test set against standard multilingual and monolingual baselines:

Model Parafraseja (combined_score)
roberta-large-ca-v2 86.42
roberta-base-ca-v2 84.38
mBERT 79.66
XLM-RoBERTa 77.83

### Author

Text Mining Unit (TeMU) at the Barcelona Supercomputing Center (bsc-temu@bsc.es)

### Contact information

For further information, send an email to aina@bsc.es

Copyright (c) 2022 Text Mining Unit at Barcelona Supercomputing Center

### Funding

This work was funded by the Departament de la Vicepresidència i de Polítiques Digitals i Territori de la Generalitat de Catalunya within the framework of Projecte AINA.

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### Disclaimer

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The models published in this repository are intended for a generalist purpose and are available to third parties. These models may have bias and/or any other undesirable distortions.

When third parties, deploy or provide systems and/or services to other parties using any of these models (or using systems based on these models) or become users of the models, they should note that it is their responsibility to mitigate the risks arising from their use and, in any event, to comply with applicable regulations, including regulations regarding the use of Artificial Intelligence.

In no event shall the owner and creator of the models (BSC – Barcelona Supercomputing Center) be liable for any results arising from the use made by third parties of these models.