Situation-Aware Multivariate Time Series Anomaly Detection Through Active Learning and Contrast VAE-Based Models in Large Distributed Systems. - Zhihan Li; Youjian Zhao; Yitong Geng; Zhanxiang Zhao; Hanzhang Wang; Wenxiao Chen; Huai Jiang; Amber Vaidya; Liangfei Su; Dan Pei (IEEE J. Sel. Areas Commun., 2022)