Political polarization in social media: Analysis of the “Twitter political field” in Japan2017 Articolo in Rivista ScientificaJapan, political polarization, social media, TwitterTakikawa, H., & Nagayoshi, K. (2017). Political polarization in social media: Analysis of the “Twitter political field” in Japan. In 2017 IEEE international conference on big data (big data) (pp. 3143-3150). IEEE.