User Group Oriented Temporal Dynamics （面向用户组的时序动态）.pdf

User Group Oriented Temporal Dynamics Exploration Zhiting Hu , Junjie Yao , Bin Cui Department of Computer Science, Key Lab of High Confidence Software Technologies (MOE), Peking University University of California, Santa Barbara zhitinghu@, bin.cui@, jjyao@ Abstract 0.03 Temporal online content becomes the zeitgeist to reflect our y t 0.02 i interests and changes. Active users are essential participants r a l and promoters behind it. Temporal dynamics becomes a vi- u p o 0.01 able way to investigate users. However, most current work P only use global temporal trend and fail to distinguish such fine-grained patterns across groups. Different users have di- 0