Are Safer Looking Neighborhoods More Lively?: A Multimodal Investigation into Urban Life. - Marco De Nadai; Radu-Laurentiu Vieriu; Gloria Zen; Stefan Dragicevic; Nikhil Naik 003; Michele Caraviello; César Augusto Hidalgo; Nicu Sebe; Bruno Lepri (ACM Multimedia, 2016)