CoPEP: Corpus of Portuguese from Academic Journals

The CoPEP Corpus (Corpus de Português Escrito em Periódicos) is a synchronic corpus of Portuguese made up of around 10.000 texts collected from academic journals from Brazil and Portugal. The corpus was prepared especially for a lexicographic project focussed on designing an online corpus-driven dictionary of Portuguese for university students (Kuhn, 2017). The corpus contains approximately 40 million words, which are distributed among three Schools of Knowledge, and further divided into six Great Areas (according to CAPES classification).

The subcorpora for each language variety are of almost the same size and consist of a similar number of words per both Great Areas and Schools, making the corpus evenly balanced. Metadata on the texts have been carefully recorded in order to allow advanced corpus search options, e.g. year of publication, Great Area of Knowledge and ISSN number.

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Finance Code 001 and in part by the Fundação para a Ciência e a Tecnologia de Portugal, through the Strategic Project of CELGA-ILTEC at University of Coimbra (POCI-01-0145-FEDER-006986 – UID/LIN/04887/2013).

Authors of corpus

The Corpus of Portuguese from Academic Journals was created by Tanara Zingano Kuhn and José Pedro Ferreira in 2018. For more information about the corpus, please contact Tanara Zingano Kuhn at tanarazingano(a)

Copyright & financing

Texts in the corpus are provided under Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0).

Výsledek obrázku pro Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)

Part-of-speech tagset

The Portuguese CoPEP corpus was tagged by FreeLing using EAGLES PoS tags.

Texts are distributed into three Schools of Knowledge, and further divided into six Great Areas (according to CAPES classification).

Colégios Colégio de Humanidades (HU) Colégio de Ciências da Vida (CV) Colégio de Ciências Exatas, da Terra e Multidisciplinar (CE)
Grandes áreas Ciências Humanas (Hu) Ciências Socias Aplicadas (Ap) Ciências da Saúde (He) Ciências Agrícolas (Ag) Engenharia (En) Ciências Exatas e da Terra (Ex)

Name of attributes

Attributes in English Attributes in Portuguese
variety variedade
source fonte
school colegio
great_area grande_area
issn issn (no change)
year ano
issue num_edicao
article_num num_artigo

Names of attribute values

Attributes Values in English Values in Portuguese
great_area Exact-Earth Sciences Exatas e da Terra
great_area Engineering Engenharia
school Ex-Tech-Multi Sciences Ciencias da Terra, Exatas e Multidisciplinar
great_area Health Sciences Ciencias da Saude
great_area Agricultural Sciences Ciencias Agricolas
school Life Sciences Ciencias da Vida
great_area Applied Social Sciences Ciencias Socias Aplicadas
great_area Human Sciences Ciencias Humanas
school Humanities Humanidades

Tools to work with the CoPEP corpus

A complete set of tools is available to work with this academic Portuguese corpus to generate:

  • word sketch – Portuguese collocations categorized by grammatical relations
  • thesaurus – synonyms and similar words for every word
  • word lists – lists of Portuguese nouns, verbs, adjectives etc. organized by frequency
  • n-grams – frequency list of multi-word units
  • concordance – examples in context
  • keywords– terminology extraction of one-word units
  • text type analysis – statistics of metadata in the corpus

How to cite

  • Tanara Zingano Kuhn & José Pedro Ferreira (2018). CoPEP – Corpus de Português Escrito em Periódicos (v.1.4)


Search the CoPEP corpus

Sketch Engine offers a range of tools to work with this Portuguese corpus from Portuguese academic journals.

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