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Captura de informações em redes sociais

para análise de sentimento de produtos

através de um modelo de dados dimensional




       Departamento de Ciência da Computação - IM/UFRJ
          autor: José Luiz Fonseca Pereira (sem bolsa)
          orientadores: Jonice Oliveira, Fernanda Bruno
Usuários de Internet BR
90.0
                                                                        82.4
                                                       78.2

                                     69.2
 67.5
                   62.3


   45.0                                                                                  Usuários (+16)




       22.5



                                                                  Trim 1 - 2012
              0                                   Trim 1 - 2011
                                  Trim 1 - 2010
                  Trim 1 - 2009
                                                                            Fonte: IBOPE / Abril - 2012
26,7h online/mês
     6h redes sociais
4,8h facebook
          Fonte: 2012 Brazil Digital Future ComScore / Dezembro - 2011
Atividades preferidas
Navegando na Web
Redes Sociais
Emails, SMS, MI                   10%

Videos Online

                          16%




         3 7%                           53%



                   ia l
              S oc
        eb
                            21%


      W


                                              Fonte: IAB / Março - 2012
modelo de dados
  dimensional
Redes Sociais Analisadas


facebook   twitter   youtube
1 bilhão   usuários (Out/2012)




2,7 bilhões             likes/comentários diários



                                       fonte: Facebook.com
465 milhões    usuários (Fev/2012)




175 milhões   tweets diários



                             fonte:Twitter.com
800 milhões           visitas por mês (Out/2012)




72 horas   vídeos publicados por minuto



                                   fonte:Youtube.com
extração
extração




transformação

análise sentimento




                     staging area
extração




transformação

análise sentimento


                                    carga




                     staging area
Estudo de caso
eleições americanas
palavras chaves
            obama (média de 1500 tweets/hora*)

        obama2012 (média de 700 tweets/hora*)




* considerando de 07:00 as 18:00
palavras chaves
     romney (média de1200 tweets/hora*)

CantAfford4More (média de 300 tweets/hora*)




                          * considerando de 07:00 as 18:00
Dados do Experimento
       05-11-2012 Período: 1h (penúltimo dia)




50 mil        posts



    22 mil                             tweets



       1,76 mil                                 videos
“I am so happy that there is no school
                   this whole week and I don't think we
                       have school Monday or Tuesday
                    because of election day oh and my
                  family is voting for Obma because he is
Adolescente
  Chicago / EUA
                      amzing and remember to vote for
                          Obama :-) :-) :-) :-) :-) :-) :-)”



                  “Barack Hussein Obama the butcher of
                     Benghazi....what a piece of filth!”


   Adulto
   Ohio / EUA
“I am so happy that there is no school
                   this whole week and I don't think we
                       have school Monday or Tuesday
                    because of election day oh and my
                  family is voting for Obma because he is
Adolescente
  Chicago / EUA
                      amzing and remember to vote for
                          Obama :-) :-) :-) :-) :-) :-) :-)”

                      -5                              5


                  “Barack Hussein Obama the butcher of
                     Benghazi....what a piece of filth!”

                      -5                              5
   Adulto
   Ohio / EUA
“I am so happy that there is no school
                   this whole week and I don't think we
                       have school Monday or Tuesday
                    because of election day oh and my
                  family is voting for Obma because he is
Adolescente
  Chicago / EUA
                      amzing and remember to vote for
                          Obama :-) :-) :-) :-) :-) :-) :-)”

                      -5                               5
                               análise sentimento= 4

                  “Barack Hussein Obama the butcher of
                     Benghazi....what a piece of filth!”

                      -5                               5
   Adulto                     análise sentimento= -4
   Ohio / EUA
05-11-2012 (penúltimo dia)




                             Romney    Obama

                             56,39%   57,30 %
                                               ~ 30% de neutros


                             55,39%   57,38 %
                                               ~ 48% de neutros


                             67,46%   56,07%55% de neutros
                                           ~
Empate técnico nas redes sociais.
Empate técnico nas redes sociais.
93%                          71%
                              negros            latinos




                 60%                           55%
                                                          via email - dia 08/11/2012




                       jovens (18 a 29 anos)   mulheres


fonte: O Globo (07/11/2012)
93%                              71%
                                negros                  latinos
                                 “Será que dá pra perceber isso via
    Juliana Valerio, PhD
                                   comentários em midia social?”


                                                    55%
    Professora Adjunta




                  60%
         DCC/UFRJ                                                  via email - dia 08/11/2012




                           jovens (18 a 29 anos)        mulheres


fonte: O Globo (07/11/2012)
93%                          71%
                              negros            latinos




                 60%                           55%
                                                          via email - dia 08/11/2012




                       jovens (18 a 29 anos)   mulheres


fonte: O Globo (07/11/2012)
Promotores & indecisos de Obama

                             46%
                                               54%




amostragem de aproximadamente 20 mil pessoas
Conclusões
• Através deste estudo é possível analisar em
  poucas horas, a influência das ações comerciais
  sobre um produto.


• A desambiguação entre redes sociais minimiza
  duplicação de análises.


• As evoluções das redes sociais e suas limitações
  impactam diretamente no processo de extração.
Trabalhos Futuros
• A utilização de análise semântica do conteúdo
  extraído pode gerar um resultado melhor nas
  análises finais.


• Ampliação das informações extraídas das redes
  sociais, adaptando as peculiaridades e políticas de
  privacidade de cada uma.


• Desenvolvimento de trabalho linguistico para
  análise de sentimento em diversos idiomas.
Obrigado! ;)
 José Luiz Fonseca Pereira
    jluizfp@gmail.com
      @zeluizfonseca

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jic2012

  • 1. Captura de informações em redes sociais para análise de sentimento de produtos através de um modelo de dados dimensional Departamento de Ciência da Computação - IM/UFRJ autor: José Luiz Fonseca Pereira (sem bolsa) orientadores: Jonice Oliveira, Fernanda Bruno
  • 2. Usuários de Internet BR 90.0 82.4 78.2 69.2 67.5 62.3 45.0 Usuários (+16) 22.5 Trim 1 - 2012 0 Trim 1 - 2011 Trim 1 - 2010 Trim 1 - 2009 Fonte: IBOPE / Abril - 2012
  • 3. 26,7h online/mês 6h redes sociais 4,8h facebook Fonte: 2012 Brazil Digital Future ComScore / Dezembro - 2011
  • 4. Atividades preferidas Navegando na Web Redes Sociais Emails, SMS, MI 10% Videos Online 16% 3 7% 53% ia l S oc eb 21% W Fonte: IAB / Março - 2012
  • 5.
  • 6. modelo de dados dimensional
  • 8. 1 bilhão usuários (Out/2012) 2,7 bilhões likes/comentários diários fonte: Facebook.com
  • 9. 465 milhões usuários (Fev/2012) 175 milhões tweets diários fonte:Twitter.com
  • 10. 800 milhões visitas por mês (Out/2012) 72 horas vídeos publicados por minuto fonte:Youtube.com
  • 11.
  • 15.
  • 17. palavras chaves obama (média de 1500 tweets/hora*) obama2012 (média de 700 tweets/hora*) * considerando de 07:00 as 18:00
  • 18. palavras chaves romney (média de1200 tweets/hora*) CantAfford4More (média de 300 tweets/hora*) * considerando de 07:00 as 18:00
  • 19. Dados do Experimento 05-11-2012 Período: 1h (penúltimo dia) 50 mil posts 22 mil tweets 1,76 mil videos
  • 20. “I am so happy that there is no school this whole week and I don't think we have school Monday or Tuesday because of election day oh and my family is voting for Obma because he is Adolescente Chicago / EUA amzing and remember to vote for Obama :-) :-) :-) :-) :-) :-) :-)” “Barack Hussein Obama the butcher of Benghazi....what a piece of filth!” Adulto Ohio / EUA
  • 21. “I am so happy that there is no school this whole week and I don't think we have school Monday or Tuesday because of election day oh and my family is voting for Obma because he is Adolescente Chicago / EUA amzing and remember to vote for Obama :-) :-) :-) :-) :-) :-) :-)” -5 5 “Barack Hussein Obama the butcher of Benghazi....what a piece of filth!” -5 5 Adulto Ohio / EUA
  • 22. “I am so happy that there is no school this whole week and I don't think we have school Monday or Tuesday because of election day oh and my family is voting for Obma because he is Adolescente Chicago / EUA amzing and remember to vote for Obama :-) :-) :-) :-) :-) :-) :-)” -5 5 análise sentimento= 4 “Barack Hussein Obama the butcher of Benghazi....what a piece of filth!” -5 5 Adulto análise sentimento= -4 Ohio / EUA
  • 23. 05-11-2012 (penúltimo dia) Romney Obama 56,39% 57,30 % ~ 30% de neutros 55,39% 57,38 % ~ 48% de neutros 67,46% 56,07%55% de neutros ~
  • 24. Empate técnico nas redes sociais.
  • 25. Empate técnico nas redes sociais.
  • 26.
  • 27.
  • 28.
  • 29. 93% 71% negros latinos 60% 55% via email - dia 08/11/2012 jovens (18 a 29 anos) mulheres fonte: O Globo (07/11/2012)
  • 30. 93% 71% negros latinos “Será que dá pra perceber isso via Juliana Valerio, PhD comentários em midia social?” 55% Professora Adjunta 60% DCC/UFRJ via email - dia 08/11/2012 jovens (18 a 29 anos) mulheres fonte: O Globo (07/11/2012)
  • 31. 93% 71% negros latinos 60% 55% via email - dia 08/11/2012 jovens (18 a 29 anos) mulheres fonte: O Globo (07/11/2012)
  • 32. Promotores & indecisos de Obama 46% 54% amostragem de aproximadamente 20 mil pessoas
  • 33. Conclusões • Através deste estudo é possível analisar em poucas horas, a influência das ações comerciais sobre um produto. • A desambiguação entre redes sociais minimiza duplicação de análises. • As evoluções das redes sociais e suas limitações impactam diretamente no processo de extração.
  • 34. Trabalhos Futuros • A utilização de análise semântica do conteúdo extraído pode gerar um resultado melhor nas análises finais. • Ampliação das informações extraídas das redes sociais, adaptando as peculiaridades e políticas de privacidade de cada uma. • Desenvolvimento de trabalho linguistico para análise de sentimento em diversos idiomas.
  • 35. Obrigado! ;) José Luiz Fonseca Pereira jluizfp@gmail.com @zeluizfonseca