Social Interactions over Geographic-Aware Multimedia Systems


User-centric Internet multimedia scenes challenge us to discover more interesting events and topics based on matching users’ needs associated with personal preferences, geographic interests and social norms. Geotagged multimedia contents from online social sites, e.g., Flickr and Twitter, provide large volumes of data about many given locations. Hence, location is one of the most important user-generated contexts and contains rich information about an individual’s interests and behavior. Location-based social multimedia streams (e.g., tweets, videos, images) can provide us with socially complementary information to predict users’ needs.

By making use of geo-tagging, a cohesive set of social multimedia streams can be published to facilitate a more accurate analysis of user-centric big data information and further assess user tastes based on location activities. This tutorial delivers not only a better understanding of the basics of location-aware contextual descriptions and its relations to social multimedia scenes, but may also serve to highlight relationships that can be collaboratively applied to multimodal retrieval and recommendation technology.


Roger Zimmermann
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Dr. Roger Zimmermann is an Associate Professor at the National University of Singapore (NUS) and was recently an Adjunct Associate Professor in the Department of Computer Science at the University of Southern California (USC). He is also a deputy director with the Interactive and Digital Media Institute (IDMI) at NUS and a co-director of the Centre of Social Media Innovations for Communities (COSMIC), a research institute funded by the Media Development Authority (MDA) of Singapore. Prior to joining NUS he held the position of Research Area Director with the Integrated Media Systems Center (IMSC) at the University of Southern California (USC). He received his Ph.D. degree from USC. Among his research interests are distributed and peer-to-peer systems, collaborative environments, streaming media architectures, geo-referenced video management, mobile video, and location-based services. Dr. Zimmermann is a Senior Member of the IEEE and a member of ACM. He has co-authored a book, six patents and more than hundred-fifty conference publications, journal articles and book chapters in the areas of multimedia and information management. Dr. Zimmermann is on the editorial board of the ACM Computers in Entertainment magazine and the International Journal of Multimedia Tools and Applications. He is also an Associate Editor for the ACM Transactions on Multimedia Computing, Communications and Applications journal. He has served on the conference program committees of many leading conferences and as reviewer of many journals. Additional details can be found on his website at

Yi Yu
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Yi Yu received her Ph.D. degree in Computer Science in 2009 from Nara Women’s University. She worked at different institutions including New Jersey Institute of Technology, University of Milan and Nara Women’s University. She currently works at School of Computing, National University of Singapore. Her research interests include social interactions over geo-aware multimedia streams, multimedia/music signal processing, audio classification and tagging, locality sensitive hashing-based music information retrieval, and pest sound classification. She received a best paper award from IEEE ISM 2012.


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