Detecção de Posicionamento e Rotulação Automática de Usuários do Twitter: estudo sobre o embate científico-político no contexto da CPI da Covid-19

  • Patricia D. Santos UFABC
  • Denise H. Goya UFABC

Resumo


O posicionamento das pessoas em torno de questões sociais e políticas é muitas vezes realizado via mensagens postadas nas mídias sociais. Prever esse posicionamento sem a ajuda de rotulações manuais pode ser uma tarefa desafiadora. Utilizando um estudo de caso específico, a saber, a CPI da Covid-19, este artigo propõe um método para detectar e quantificar o posicionamento de usuários do Twitter em relação a um tema politicamente controverso e polarizado. Por meio do uso de abordagens computacionais combinadas com fatores sociais, como homofilia e estrutura de rede, foi possível rotular automaticamente 98% dos usuários presentes nas bases de dados estudadas, com pouquíssima intervenção humana, bem como categorizar suas posições por meio de uma pontuação de valência de posicionamento e duas métricas complementares: grau de equilíbrio e engajamento.

Palavras-chave: detecção de posicionamento, rotulação automática, clusterização, modelagem de tópicos, redes sociais

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Publicado
31/07/2022
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SANTOS, Patricia D.; GOYA, Denise H.. Detecção de Posicionamento e Rotulação Automática de Usuários do Twitter: estudo sobre o embate científico-político no contexto da CPI da Covid-19. In: BRAZILIAN WORKSHOP ON SOCIAL NETWORK ANALYSIS AND MINING (BRASNAM), 11. , 2022, Niterói. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2022 . p. 49-60. ISSN 2595-6094. DOI: https://doi.org/10.5753/brasnam.2022.223212.