Ricerc@Sapienza

In an age where people flee from their countries of origin due to the worsening of conflicts and wars, of political crisis and violence, of terrorism, of religious radicalization processes, and persecutions, policy making needs to be based on a wider and more sensible information systems. Population censuses, sample surveys as well as administrative archives and registers are revealing some critical issues that could be partly overcome by the enormous informative potential offered by new sources and Big Data (Rango, 2014; De Backer, 2014).