Detecção de Posicionamento em Tweets sobre Política no Contexto Brasileiro

  • William Christhie
  • Julio C. S. Reis
  • Fabrício Benevenuto Mirella M. Moro
  • Virgílio Almeida


Opinions shared over the Web constitute big volumes of data. Moreover, they may contain stances that are expressed directly or indirectly. Hence, stance detection may help to define the polarity related to a target idea. Here, we present the characterization of a broad set of tweets in Portuguese about the 2018 Brazilian presidential race. Such a set serves as the basis for automatic stance detection through a semi-supervised approach. In our evaluation, we find clues on the presence of bots in the network. We also evaluate three classifiers with paired statistical test, and our results present F-Measure above 94%.

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CHRISTHIE, William; REIS, Julio C. S.; MORO, Fabrício Benevenuto Mirella M.; ALMEIDA, Virgílio. Detecção de Posicionamento em Tweets sobre Política no Contexto Brasileiro. In: BRAZILIAN WORKSHOP ON SOCIAL NETWORK ANALYSIS AND MINING (BRASNAM), 7. , 2018, Natal. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2018 . ISSN 2595-6094. DOI: