01157nas a2200157   4500008004100000245005600041210005300097260003600150520061100186100002300797700002200820700002200842700002100864700002000885856009400905       2015                        eng d00aCity users’ classification with mobile phone data0 aCity users classification with mobile phone data  aSanta Clara (CA) - USAc11/20153 aNowadays mobile phone data are an actual proxy for studying the users’ social life and urban dynamics. In this paper we present the Sociometer, and analytical framework aimed at classifying mobile phone users into behavioral categories by means of their call habits. The analytical process starts from spatio-temporal profiles, learns the different behaviors, and returns annotated profiles. After the description of the methodology and its evaluation, we present an application of the Sociometer for studying city users of one small and one big city, evaluating the impact of big events in these cities.1 aGabrielli, Lorenzo1 aFurletti, Barbara1 aTrasarti, Roberto1 aGiannotti, Fosca1 aPedreschi, Dino  uhttps://kdd.isti.cnr.it/publications/city-users%E2%80%99-classification-mobile-phone-data