HotSpot: Anomaly Localization for Additive KPIs With Multi-Dimensional Attributes. - Yongqian Sun; Youjian Zhao; Ya Su; Dapeng Liu; Xiaohui Nie; Yuan Meng 002; Shiwen Cheng; Dan Pei; Shenglin Zhang; Xianping Qu; Xuanyou Guo (IEEE Access, 2018)