Three SAIL members, Yongkai Wu, Lu Zhang and Xintao Wu, attended  the IEEE International Conference on Data Mining (ICDM), Atlantic City, NJ, USA, Nov 14-17, 2015.  Xintao Wu presented the ICDM paper “Analysis of Spectral Space Properties of Directed Graphs using Matrix Perturbation Theory with Application in Graph Partition” by Yuemeng Li, Xintao Wu and Aidong Lu and the DAVA workshop paper “Block-Organizer Topology Visualization for Visual Exploration of Signed Networks” by Xianlin Hu, Leting Wu, Aidong Lu and Xintao Wu.