Babak Loni, Martha Larson, Alessandro Bozzon, Luke Gottlieb. Crowdsourcing for Social Multimedia at MediaEval 2013: Challenges, Data set, and Evaluation. In Martha A. Larson, Xavier Anguera, Timo Reuter, Gareth J. F. Jones, Bogdan Ionescu, Markus Schedl, Tomas Piatrik, Claudia Hauff, Mohammad Soleymani, editors, Proceedings of the MediaEval 2013 Multimedia Benchmark Workshop, Barcelona, Spain, October 18-19, 2013. Volume 1043 of CEUR Workshop Proceedings, CEUR-WS.org, 2013. [doi]