Academic Staff

Brief Biosketch

Dr. Liu is Research Assistant Professor at the Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University. He received the B.S. degree in Measurement & Control Technology & Instrument from Hunan University, Changsha, China, in 2014, and the M.S. degree in Instrument Science & Technology from University of Science and Technology of China, Hefei, China, in 2017, and a Ph.D. degree in Industrial Systems Engineering & Management, National University of Singapore, Singapore, in 2021. His research interests include Quality and Reliability Engineering, Prognostics and Health Management, and Machine Learning. His previous works have been published in Technometrics, IEEE Transactions (TII, TASE, TTE, and TIM), Reliability Engineering & System Safety, and so on. Some publications are:

Some Publications

• Liu, X., Lee, C.K.M., Huang, J., & Sun, Q. (2025). Online Robustness Degradation Analysis with Measurement Outlier. IEEE Transactions on Instrumentation and Measurement, accepted.
• Liu, X., Hu, Z., Mao, L., & Xie, M. (2024). Adaptive State of Health Estimation for Lithium-ion Battery with Partially Unlabeled and Incomplete Charge Curves. IEEE Transactions on Transportation Electrification, in press.
• Liu, X., Lee, C.K.M., Zhang, H., Chen, P., Huang, J., & Wong, C. (2024). Fault diagnosis based on incomplete sensor variables with a hierarchical semi-supervised Gaussian mixture classifier. Applied Mathematical Modeling, 138, 115764.
• Liu, X., Wang, X., Xie, M., & Ye, Z.-S. (2023). Robust Degradation State Identification in the Presence of Parameter Uncertainty and Outliers. IEEE Transactions on Industrial Informatics, in press.
• Liu, X., Hu, Z., Wang, X., & Xie, M. (2023). Capacity Degradation Assessment of Lithium-ion Battery Considering Coupling Effects of Calendar and Cycling Aging. IEEE Transactions on Automation Science and Engineering, in press.
• Liu, X., Du, J., & Ye, Z.-S. (2023). A covariate-regulated sparse subspace learning model and its application to process monitoring and fault isolation. Technometrics, 65(2), 269-280.
• Liu, X., Du, J., & Ye, Z.-S. (2021). A condition monitoring and fault isolation system for wind turbine based on SCADA data. IEEE Transactions on Industrial Informatics, 18(2), 986–995.
• Liu, X., Sun, Q., Ye, Z.-S., & Yildirim, M. (2021). Optimal multi-type inspection policy for systems with imperfect online monitoring. Reliability Engineering & System Safety, 207, 107335.
• Liu, X., Hu, Z., He, Q., Zhang, S., & Zhu, J. (2017). Doppler distortion correction based on microphone array and matching pursuit algorithm for a wayside train bearing monitoring system. Measurement Science and Technology, 28(10), 105006.
• Liu, X., Hu, Z., He, Q., & Zhu, J. (2017). Doppler distortion correction method based on rotation matching of time-frequency ridge lines. Journal of Vibration and Shock, 2017, 17.