PTT5: Pretraining and validating the T5 model on Brazilian Portuguese data

• URL: http://arxiv.org/abs/2008.09144v2
• Date: Thu, 8 Oct 2020 18:37:54 GMT
• Title: PTT5: Pretraining and validating the T5 model on Brazilian Portuguese data
• Authors: Diedre Carmo, Marcos Piau, Israel Campiotti, Rodrigo Nogueira, Roberto Lotufo
• Abstract summary: We pretrain a T5 model on the BrWac corpus, an extensive collection of web pages in Portuguese. We show that our Portuguese pretrained models have significantly better performance over the original T5 models.
• Score: 4.579262239784748
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In natural language processing (NLP), there is a need for more resources in Portuguese, since much of the data used in the state-of-the-art research is in other languages. In this paper, we pretrain a T5 model on the BrWac corpus, an extensive collection of web pages in Portuguese, and evaluate its performance against other Portuguese pretrained models and multilingual models on three different tasks. We show that our Portuguese pretrained models have significantly better performance over the original T5 models. Moreover, we demonstrate the positive impact of using a Portuguese vocabulary. Our code and models are available at https://github.com/unicamp-dl/PTT5.

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