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racai/
distilbert-multi-base-romanian-cased

Name: distilbert-multi-base-romanian-cased
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Romanian DistilBERT

This repository contains the a Romanian cased version of DistilBERT (named DistilMulti-BERT-base-ro in the paper) that was obtained by distilling an ensemble of two teacher models: dumitrescustefan/bert-base-romanian-cased-v1 and readerbench/RoBERT-base.

The model was introduced in this paper. The adjacent code can be found here.

Usage

python

from transformers import AutoTokenizer, AutoModel

# load the tokenizer and the model
tokenizer = AutoTokenizer.from_pretrained("racai/distilbert-multi-base-romanian-cased")
model = AutoModel.from_pretrained("racai/distilbert-multi-base-romanian-cased")

# tokenize a test sentence
input_ids = tokenizer.encode("Aceasta este o propoziție de test.", add_special_tokens=True, return_tensors="pt")

# run the tokens trough the model
outputs = model(input_ids)

print(outputs)

Model Size

The model is 35% smaller than bert-base-romanian-cased-v1 and 30% smaller than RoBERT-base.

Model	Size (MB)	Params (Millions)
RoBERT-base	441	114
bert-base-romanian-cased-v1	477	124
distilbert-multi-base-romanian-cased	312	81

Evaluation

We evaluated the model in comparison with its two teachers on 5 Romanian tasks:

UPOS: Universal Part of Speech (F1-macro)
XPOS: Extended Part of Speech (F1-macro)
NER: Named Entity Recognition (F1-macro)
SAPN: Sentiment Anlaysis - Positive vs Negative (Accuracy)
SAR: Sentiment Analysis - Rating (F1-macro)
DI: Dialect identification (F1-macro)
STS: Semantic Textual Similarity (Pearson)

Model	UPOS	XPOS	NER	SAPN	SAR	DI	STS
RoBERT-base	98.02	97.15	85.14	98.30	79.40	96.07	81.18
bert-base-romanian-cased-v1	98.00	96.46	85.88	98.07	79.61	95.58	80.30
distilbert-multi-base-romanian-cased	98.07	96.83	83.22	98.11	79.77	96.18	80.66

BibTeX entry and citation info

bibtex

@article{avram2021distilling,
  title={Distilling the Knowledge of Romanian BERTs Using Multiple Teachers},
  author={Andrei-Marius Avram and Darius Catrina and Dumitru-Clementin Cercel and Mihai Dascălu and Traian Rebedea and Vasile Păiş and Dan Tufiş},
  journal={ArXiv},
  year={2021},
  volume={abs/2112.12650}
}