joao-luz/mariner

This is the MariNER (Mapeamento e Anotações de Registros hIstóricos para NER) dataset, a Named Entity Recognition dataset for Brazilian Portuguese in the historical domain, presented in the paper MariNER: A Dataset for Historical Brazilian Portuguese Named Entity Recognition. The dataset consists of five documents from early 20th Century on expeditions through Brazil's Northeast region. The documents were manually annotated with four entity types: Person, Location, Date and Organization. They were also divided into sentences and tokenized.

The dataset is available in the BIO format, with the following distinct labels and corresponding indices:

Label	Tag
0	O
1	B-PESSOA
2	I-PESSOA
3	B-LOCAL
4	I-LOCAL
5	B-DATA
6	I-DATA
7	B-ORGANIZACAO
8	I-ORGANIZACAO

Link to paper: https://link.springer.com/chapter/10.1007/978-3-032-15993-9_25

The dataset is also available in Github at https://github.com/Joao-Luz/mariner

To cite this work, use:

 @InProceedings{10.1007/978-3-032-15993-9_25,
  author="Sarcinelli, Jo{\~a}o Lucas Luz Lima
  and Teixeira, Marina Lages Gon{\c{c}}alves
  and Paiva, Jade Bortot de
  and Silva, Diego Furtado",
  editor="de Freitas, Rosiane
  and Furtado, Diego",
  title="MariNER: A Dataset for Historical Brazilian Portuguese Named Entity Recognition",
  booktitle="Intelligent Systems",
  year="2026",
  publisher="Springer Nature Switzerland",
  address="Cham",
  pages="364--378",
}