Quantifying Visual-Representativeness of Social Image Tags Using Image Tag Clarity

Part I Social Media Content Analysis Quantifying Visual-Representativeness of Social Image Tags Using Image Tag Clarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Aixin Sun and Sourav S. Bhowmick Tag-Based Social Image Search: Toward Relevant and Diverse Results . . 25 Kuiyuan Yang, Meng Wang, Xian-Sheng Hua, and Hong-Jiang Zhang Social Image Tag Ranking by Two-View Learning . . . . . . . . . . . . . 47 Jinfeng Zhuang and Steven C.H. Hoi Combining Multi-modal Features for Social Media Analysis . . . . . . . . 71 Spiros Nikolopoulos, Eirini Giannakidou, Ioannis Kompatsiaris, Ioannis Patras, and Athena Vakali Multi-label Image Annotation by Structural Grouping Sparsity . . . . . . 97 Yahong Han, Fei Wu, and Yueting Zhuang Part II Social Media System Design and Analysis Mechanism Design for Incentivizing Social Media Contributions . . . . . 121 Vivek K. Singh, Ramesh Jain, and Mohan Kankanhalli Efficient Access Control in Multimedia Social Networks . . . . . . . . . . 145 Amit Sachan and Sabu Emmanuel Call Me Guru: User Categories and Large-Scale Behavior in YouTube . . 167 Joan-Isaac Biel and Daniel Gatica-Perez Social Media Visual Analytics for Events . . . . . . . . . . . . . . . . . . 189 Nicholas Diakopoulos, Mor Naaman, Tayebeh Yazdani, and Funda Kivran-Swaine