Xia Ning, Guofei Jiang, Haifeng Chen, and Kenji Yoshihira, “Heterogeneous log analysis,” NEC Labs America, US Patent 10,14,148B2, 2018.
 Xia Ning, Guofei Jiang, and Xiao Bian, “Hierarchical sparse dictionary learning (HiSDL) for heterogeneous high-dimensional time series,”NEC Labs America, US Patent 9,870,519, 2018.
 Zhiyun Qian, Jun Wang, Zhichun Li, Zhenyu Wu, Junghwan Rhee, Xia Ning, and Guofei Jiang, “Discovering and constraining idle processes,”NEC Labs America, US Patent 9,602,528, March, 2017.
 Hui Zhang, Xia Ning, Junghwan Rhee, Guofei Jiang, and Hongteng Xu, “System and method for profiling re- quests in service systems,” NECLabs America, US Patent 9,367,821, January, 2016.
 Yanjun Qi, Xia Ning, Paval Kuksa, and Bin Bai, “Systems and methods for semi-supervised relationship extrac- tion,” NEC Labs America, USPatent 8,874,432, October, 2013.