<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Polarized User and Topic Tracking in Twitter"^^ . "Digital traces of conversations in micro-blogging platforms and OSNs provide information about user opinion with a high degree of resolution. These information sources can be exploited to understand and monitor collective behaviours. In this work, we focus on polarisation classes, i.e., those topics that require the user to side exclusively with one position. The proposed method provides an iterative classification of users and keywords: first, polarised users are identified, then polarised keywords are discovered by monitoring the activities of previously classified users. This method thus allows tracking users and topics over time. We report several experiments conducted on two Twitter datasets during political election time-frames. We measure the user classification accuracy on a golden set of users, and analyse the relevance of the extracted keywords for the ongoing political discussion."^^ . "2016" . . "ACM"^^ . . "ACM"^^ . . . . . . . . . . . . . . . . . "Salvatore"^^ . "Orlando"^^ . "Salvatore Orlando"^^ . . "Mauro"^^ . "Coletto"^^ . "Mauro Coletto"^^ . . "Claudio"^^ . "Lucchese"^^ . "Claudio Lucchese"^^ . . "Raffaele"^^ . "Perego"^^ . "Raffaele Perego"^^ . . . . "Proceedings of the 39th International ACM SIGIR Conference on Research and Development in Information Retrieval"^^ . . . . . "New York, USA"^^ . . . . . "HTML Summary of #3523 \n\nPolarized User and Topic Tracking in Twitter\n\n" . "text/html" . . . "QA75 Electronic computers. Computer science"@en . .