Sentiment-enhanced Multidimensional Analysis of
Online Social Networks:
Perception of the Mediterranean Refugees Crisis
Accepted at SNAST ’16: Workshop on Social Network Analysis Surveillance Technologies in conjunction with ASONAM ’16: IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining .
Abstract. We propose an analytical framework able to investigate discussions about polarized topics in online social networks from many diﬀerent angles. The framework supports the analysis of social networks along several dimensions: time, space and sentiment. We show that the proposed analytical framework and the methodology can be used to mine knowledge about the perception of complex social phenomena.
We selected the refugee crisis discussions over Twitter as a case study. This diﬃcult and controversial topic is an increasingly important issue for the EU. The raw stream of tweets is enriched with space information (user and mentioned locations), and sentiment (positive vs. negative) w.r.t. refugees. Our study shows diﬀerences in positive and negative sentiment in EU countries, in particular in UK, and by matching events, locations and perception, it underlines opinion dynamics and common prejudices regarding the refugees.
 Mauro Coletto, Andrea Esuli, Claudio Lucchese, Cristina Ioana Muntean, Franco Maria Nardini, Raﬀaele Perego, and Chiara Renso. Sentiment-enhanced multidimensional analysis of online social networks: Perception of the mediterranean refugees crisis. SNAST ’16: Workshop on Social Network Analysis Surveillance Technologies, colocated with ASONAM ’16: IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, 2016.