Mining both frequent and rare episodes in multiple data streams. - Zhongyi Hu 004; Wei Liu 023; Hongan Wang (FSKD, 2013)

The discovery of user related rare sequential patterns of topics in the internet document stream. - Zhongyi Hu 004; Hongan Wang; Jiaqi Zhu 001 (SAC, 2014)

Discovery of Rare Sequential Topic Patterns in Document Stream. - Zhongyi Hu 004; Hongan Wang; Jiaqi Zhu 001; Maozhen Li 001; Ying Qiao; Changzhi Deng (SDM, 2014)

Mining User-Aware Rare Sequential Topic Patterns in Document Streams. - Jiaqi Zhu 001; Kaijun Wang; Yunkun Wu; Zhongyi Hu 004; Hongan Wang (IEEE Trans. Knowl. Data Eng., 2016)