Institute of Information Science, Academia Sinica

The usage and applications of social media have become pervasive. This has enabled a new paradigm to solve multimedia problems (e.g., recommendation and popularity prediction), which are otherwise hard to address purely by traditional approaches. In this talk, I will discuss the importance of building a mutual connection among the disparate social media on the Internet, using which cross-domain media recommendation and prediction can be realized. We accomplish this goal through building an intermediate topic space across domains and developing SocialTransfer - a novel cross-domain real-time transfer learning framework. The SocialTransfer framework is characterized by two key components: 1) a topic space learned in real time from social streams via Online Streaming Latent Dirichlet Allocation (OSLDA), and 2) a real-time cross-domain graph spectra analysis based transfer learning method that seamlessly incorporates learned topic models from social streams into the transfer learning framework. I will present a couple of use cases such as socialized query suggestion for video search and socialized video recommendation that features socially trending topical videos. Experiments on a real world large-scale dataset show that SocialTransfer outperforms traditional learners significantly, and plays a natural and interoperable connection across domains, leading to a wide variety of cross-domain applications.

Wenjun (Kevin) Zengis a Full Professor with the Computer Science Department of University of Missouri, Columbia, MO. He received his B.E., M.S., and Ph.D. degrees from Tsinghua University,  the University of Notre Dame, and Princeton University, respectively, all in electrical engineering. His current research interest includes mobile computing, social media analysis, semantic search, distributed source/video coding, 3-D analysis and coding, P2P and wireless streaming, and content and network security.

Prior to joining Univ. of Missouri in 2003, he had worked for PacketVideo Corp., Sharp Labs of America, Bell Labs, and Matsushita Info. Tech. Lab of Panasonic Technology. From 1998 to 2002, He was an active contributor to the MPEG4 Intellectual Property Management & Protection standard and the JPEG 2000 image coding standard, where four of his proposals were adopted. He is an Associate Editor of the IEEE Trans. on Info. Forensics & Security, IEEE Trans. on Circuits & Systems for Video Technology, and IEEE Multimedia Magazine, and is on the Steering Committee of IEEE Trans. on Multimedia, of which  he also served as an  Associate Editor from 2005 to 2008.He served as the Steering Committee Chair of IEEE Inter. Conf. Multimedia and Expo (ICME) in 2010 and 2011,andhas served asthe TPC Vice Chair of the ICME 2009, the TPC Chair of the 2007 IEEE Consumer Communications and Networking Conference, the TPCCo-Chair of the Multimedia Comm. and Home Networking Sym. of the 2005 IEEE Inter. Conf. Communications. He was a Guest Editor of the Proceedings of the IEEE’s Special Issue on Recent Advances in Distributed Multimedia Communications published in January 2008 and the Lead Guest Editor of IEEE Trans. on Multimedia’s Special Issue on Streaming Media published in April 2004. He is a Fellow of the IEEE.