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Prof. TSUI, Kwok Leung

BS(CUHK), MPh(CUHK), PhD(Wisconsin)

Chair Professor of Industrial Engineering

Contact Information

Office: AC1-P6623
Phone: +(852)-3442-2177
Email: kltsui@cityu.edu.hk

Research Interests

  • Quality Engineering
  • Process Control and Surveillance
  • System Informatics
  • Data Mining
  • Health Informatics
  • Bioinformatics
  • Infectious Disease Modeling
  • Logistics and Supply Chain Management


Ph.D. in Statistics University of Wisconsin at Madison
M.Ph in Mathematics The Chinese University of Hong Kong
B.Sc. in Chemistry The Chinese University of Hong Kong


  • Honorary Advisor, International Institute of Utility Specialists (IIUS), 2015
  • Fellow, the Hong Kong Institution of Engineers (HKIE), 2014
  • Fellow, American Society for Quality (ASQ), 2013
  • Fellow, International Society of Engineering Asset Management (ISEAM), 2013
  • Elected member, International Statistical Institute, 2013
  • Jack Youden Award, Technometrics, 2004
  • Fellow of American Statistics Association, 2003
  • Presidential Young Investigator, National Science Foundation, 1992
  • Individual Performance Award, Quality Assurance Center, AT&T Bell Labs, 1988 & 1989
  • Quality Award, Quality Assurance Center, AT&T Bell Labs, 1988
  • Guaranteed Financial Assistantship, University of Wisconsin, 1981-1984
  • "Yale University" Scholarship, Chinese University of Hong Kong, 1976

Recent Refereed Publications

Published (Since 2009)

  1. Xiong, Y., Chen, W., Tsui, K.L., Apley, D., “A Better Understanding of Updating Strategies in Validating Engineering Models”, Computer Methods in Applied Mechanics and Engineering, 198, 1327-1337, 2009.
  2. Mei, Y., Kim, S.B., and Tsui, K.L., "Linear-mixed effects models for feature selection in high-dimensional NMR spectra", Expert Systems with Applications, 36(3), 4703-4708, doi:10.1016/j.eswa.2008.06.032, 2009.
  3. Wang, S., Chen, W., and Tsui, K.L. , "Bayesian Validation of Computer Models", Technometrics, 51(4), 439-451, 2009.
  4. Han, S. W., Tsui, K.L., Ariyajunya, B., and Kim, S. B., "A Comparison of CUSUM, EWMA, and Temporal Scan Statistics for Detection of Increases in Poisson Rates", Quality and Reliability Engineering Internationals, 26(3), 279 – 289, DOI: 10.1002/qre.1056, 2009.
  5. Kim, S.B., Tsui, K.L., Sukchotrat, T., and Chen, V., "A Comparison Study and Discussion of the Mahalanobis-Taguchi System", International Journal of Industrial and System Engineering, 4(6), 631-644, DOI: 10.1504/IJISE.2009.026768, 2009.
  6. Kim, S.B., Huo, K., & Tsui, K.L., "A finite-sample simulation study of cross validation in tree-based models", International Journal of Information Technology and Management, 10:223-233, DOI 10.1007/s10799-009-0052-7, 2009.
  7. Murphy, T.E., McShane-Vaughn, M., and Tsui, K.L., "Principal components for diagnosing dispersion in multivariate statistical process control", Georgia Journal of Science, 67(2), 4-20, 2009.
  8. Lee, J., Alexopoulos, C., Goldsman, D., Kim, S.H., Tsui, K.L., and Wilson, J.R., "Monitoring autocorrelated processes using a distribution-free tabular CUSUM chart with automated variance estimation", IIE Transactions, 41(11), 979-994, DOI: 10.1080/07408170902906035, 2009.
  9. Wang, S., Jiang, W., and Tsui, K.L., "Adjusted Support Vector Machines Based on A New Loss Function", Annals of Operation Research, 174(1), 83-101, DOI: 10.1007/s10479-008-0495-y, 2010.
  10. Tsui, K.L., Jiang, W., and Mei, Y., "CUSUM Charts for Multivariate Monitoring and Forecasting", Encyclopedia of Operations Research and Management Science, eorms0215, 2010.
  11. Woodall, W. H., and Tsui, K.L., "Comments on ‘Some methodological issues in biosurveillance’", Statistics in Medicine, 30(5), 430-433, DOI: 10.1002/sim.4047, 2011.
  12. Jiang, W., Han, S. W., Tsui, K.L., and Woodall, W. H., "Spatiotemporal Surveillance Methods in the Presence of Spatial Correlation", Statistics in Medicine, 30(5), 569-583, DOI: 10.1002/sim.3877, 2011.
  13. Tsui, K.L., Wong, S.Y., Jiang, W., Lin, C. J., "Recent research and developments in temporal and spatiotemporal surveillance for public health", IEEE Transactions on Reliability, 60(1), 49-58, DOI: 10.1109/TR.2010.2104192, 2011.
  14. Mei, Y., Han, S. W. and Tsui, K.L., "Early Detection of a Change in Poisson Rate after Accounting for Population Size effects", Statistical Sinica, 21(2) 597-624, SS-09-179, 2011.
  15. Shu, L., Jiang, W. and Tsui, K.L., "A comparison of weighted CUSUM procedures that account for monotone changes in population size", Statistics in Medicine, 30(7) 725-741, DOI: 10.1002/sim.4122, 2011.
  16. Andradóttir, S. and Chiu, W. and Goldsman, D. and Lee, M. and Tsui, K.L. and Sander, B. and Fisman, D. and Nizam, A., "Reactive strategies for containing developing outbreaks of pandemic influenza", BMC Public Health, 11(Suppl 1):S1, DOI:10.1186/1471-2458-11-S1-S1, 2011.
  17. Su, Y., Shu, L.J., and Tsui, K.L., "Adaptive EWMA Procedures for Monitoring Processes Subject to Linear Drifts", Computational Statistics and Data Analysis, 55, 2819-2829, 2011.
  18. Xing, Y., Ma, E.W.M., Tsui, K.L., Pecht, M., "Battery Management Systems in Electric and Hybrid Vehicles", Energies, 4, 1840-1857, 2011.
  19. Murphy, T., Lin, Y., Tsui, K.L., Chen, V., Allen, J., "Identifying Feasible Design Concepts for Products with Competing Performance Requirements by Metamodeling of Loss-Scaled Principal Components", Quality Engineering, 23(2) 167-179, 2011.
  20. Jiang, W., Shu, L.J., Tsui, K.L., "Weighted CUSUM Control Charts for Monitoring Poisson Processes with Varying Sample Sizes", Journal of Quality Technology, 43(4) 346-362, 2011.
  21. Sukchotrat, T., Kim, S.B., Tsui, K.L., and Chen, V., "Integration of Classification Algorithms and Control Chart Techniques for Monitoring Multivariate Processes", Journal of Statistical Computation and Simulation, 81(12) 1897-1911, 2011.
  22. Dai, Y., Baek, S.H., Garcia-Diaz, A., Yang, B., Tsui, K.L., Zhuang, J., "An Enhanced Engineering Perspective of Global Climate Systems and Statistical Formulation of Terrestrial CO2 Exchanges", Theoretical and Applied Climatology, 107, 347-359; DOI 10.1007/s00704-011-0471-3, 2012.
  23. Su, Y., Chan, L.C., Shu, L., Tsui, K.L., "Real-Time Prediction Models for Output Power and Efficiency of Grid-Connected Solar Photovoltaic Systems", Applied Energy, 93, 319-326, 2012.
  24. Di Maio, F., Hu, J., Tse, P., Pecht, M., Tsui, K.L., and Zio E., "Ensemble-approaches for clustering health status of oil sand pumps", Expert Systems with Applications, 39, 4847-4859, 2012.
  25. Tsui, K.L., Han, S.W., Jiang, W., Woodall, W.H., "A Review and Comparison of Likelihood Based Charting Methods", IIE Transactions, 44(9) 724-743, 2012.
  26. Bai, L., Alexopoulos, C., Ferguson, M., Tsui, K.L., "A Simple and Robust Batch-Ordering Inventory Policy Under Incomplete Demand Knowledge", Computers and Industrial Engineering, 63(1):343-353, 2012.
  27. di Maio, F., Tsui, K.L., Zio, E., "Combining Relevance Vector Machines and Exponential Regression for Bearing Residual Life Estimation", Mechanical Systems and Signal Processing, 31: 405-427, 2012.
  28. Shu, L.J., Jiang, W., Tsui, K.L., "A Standardized Scan Statistic for Detecting Spatial Clusters with Estimated Parameters", Naval Research Logistics, 59(6):397-410, 2012.
  29. Hui, K.N., Yin C., Hui, K.S.O., Lee, J.Y., Li, M., Lee S.K., Tsui, K.L., Chao, C.Y.H, Kwong, C.W., "Synthesis of Co3O4 nanowire arrays supported on Ni foam for removal of volatile organic compounds", Journal of Nanoscience and Nanotechnology, 12(4): 3563-3566, 2012.
  30. Yuan, J., Ng, S.H., Tsui, K.L., "Calibration of Stochastic Computer Models Using Stochastic Approximation Methods", IEEE Transactions on Automation Science and Engineering, 10(1): 171-186, 2013.
  31. Wang, D., Tse, P.W., Tsui, K.L., "An enhanced Kurtogram method for fault diagnosis of rolling element bearings", Mechanical Systems and Signal Processing, 35(1): 176-199, 2013.
  32. Zhao, D., Wang, Y., Wang, X., Wei, X., Chen, S., Tsui, K.L., "Head Stack Assembly Off-track Dynamics Investigation via Slider Protrusion Touch Down", IEEE Transactions on Magnetics, 49(2):703-706, 2013.
  33. Wang, Y., Miao, Q., Ma, E.W.M., Tsui, K.L., Pecht, M.G., "Online Anomaly Detection for Hard Disk Drive Based on Mahalanobis Distance", PHM Special Section of IEEE Transactions on Reliability, 62(1): 136-145, 2013.
  34. Cheng, V.C.C., Tai, J.W.M., Wong, Z.S.Y., Chen, J.H.K., Pan, K.B.Q., Hai, Y., Ng, W.C., Chow, D.M.K., Yau, M.C.Y., Chan, J.F.W., Wong, S.C.Y., Tse, H., Chan, S.S.C., Tsui, K.L., Chan, F.H.W., Ho, P.L., Yuen, K.Y., "Transmission of methicillin-resistant staphylococcus aureus in the long term care facilities in Hong Kong ", BMC Infectious Diseases, 13:205, 2013.
  35. Chen, N., Tsui, K.L., "Condition Monitoring and Remaining Useful Life Prediction Using Degradation Signals: Revisited", IIE Transactions, 45(9):939-952, 2013.
  36. Xing, Y., Ma, E.W.M., Tsui, K.L., Pecht, M., "An Ensemble Model for Predicting the Remaining Useful Performance of Lithium-ion Batteries", Microelectronics Reliability special issue: Enabling Technologies for Sustainable Battery: Advances in Battery Reliability, 53(6):811-820, 2013.
  37. Huang, W., Shu, L., Jiang, W., Tsui, K.L., "Evaluation of Run-Length Distribution for CUSUM Charts under Gamma Distribution", IIE Transactions, 45(9):981-994, 2013.
  38. Shu, L., Huang W., Su, Y., Tsui, K.L., "Computation of the Run Length Percentiles of CUSUM Control Charts Under Changes in Variances", Journal of Statistical Computation and Simulation, 83(7): 1238-1251, 2013.
  39. Xu, M., Wong, T.C., Wong, S.Y., Chin, K.S., Tsui, K.L., Hsia, R.Y., "Delays in service for non-emergent patients due to arrivals of emergent patients in the emergency department: a case study in Hong Kong", Journal of Emergency Medicine, 45(2): 271-280, 2013.
  40. Wang, Y., Jin, X., Chen, S., Wei, X., Tsui, K.L., "Effect of low-frequency vibration in z-direction (out-of-plane) on slider dynamics", IEEE Transactions on Magnetics, 49(9): 4977-4981; doi: 10.1109/TMAG.2013.2252359, 2013.
  41. Jiang, W., Shu, L., Zhao, H.H., Tsui, K.L., "CUSUM Procedures for Health Care Surveillance", Quality and Reliability Engineering International, 29(6): 883-897, 2013.
  42. Ye, Z.S., Tsui, K.L., Wang, Y., Pecht, M., "Degradation data analysis using Wiener processes with measurement errors", IEEE Transactions on Reliability, 62(4): 772-780, 2013.
  43. Tsui, K.L., Wong, S.Y., Goldsman, D., Edesess, M., "Tracking Infectious Disease Spread for Global Pandemic Containment", IEEE Intelligent Systems, 28(6):60-64, 2013.
  44. Xing, Y., He W., Pecht, M., Tsui, K.L., "State of charge estimation of lithium-ion batteries using the open-circuit voltage at various ambient temperatures", Applied Energy, 113: 106-115, 2014.
  45. Wang, Y., Ma, E.W.M., Chow, T.W.S., Tsui, K.L., "A Two-step Parametric Method for Failure Prediction in Hard Disk Drives", IEEE Transactions on Industrial Informatics, 10(1): 419-430, 2014.
  46. He, F., Shu, L., Tsui, K.L., "Adaptive CUSUM Charts for Monitoring Linear Drifts in Poisson Rates", International Journal of Production Economics, 148: 14-20, 2014.
  47. Ng, S.S.Y., Xing, Y., Tsui, K.L., "A naive Bayes model for robust remaining useful life prediction of lithium-ion battery", Applied Energy, 118:114-123, 2014.
  48. Ng, S.S.Y., Tse, P.W., Tsui, K.L., "A One-Versus-All Class Binarization Strategy for Bearing Diagnostics of Concurrent Defects", Sensors, 14:1295-1321, 2014.
  49. Park, Y., Baek, S.H., Kim, S.H., Tsui, K.L., "Statistical Process Control Based Intrusion Detection and Monitoring", Quality and Reliability Engineering International, 30(2): 257-273, 2014.
  50. Lin, C.J, Tsui, K.L., Lin, C.Y., "A Spatial-EWMA Framework for Detecting Clustering", Quality and Reliability Engineering International, 30(2): 181-189, 2014.
  51. Wang, Y., Wei, X., Tsui, K.L., Chow, T.W.S., "Tribological degradation of head-disk interface in hard disk drives under accelerated wear condition", IEEE Transactions on Magnetics, 50(3):3301007, 2014.
  52. Jin, X., Chow, T.W.S., Tsui, K.L., "Online Anomaly Detection of Brushless DC Motor Using Current Monitoring Technique", International Journal of Performability Engineering, 10(3):263-271, 2014.
  53. Wang, Y., Ye, Z.S., Tsui, K.L., "Stochastic evaluation of magnetic head wears in hard disk drives", IEEE Transactions on Magnetics, 50(5):1-7, 2014.
  54. Shu, L., Su, Y., Jiang, W., Tsui, K.L., "A Comparison of Exponentially Weighted Moving Average Based Methods for Monitoring Increases in Incidence Rate with Varying Population Size", IIE Transactions, 46(8): 798-812, 2014.
  55. Han, S.W., Jiang W., Shu L., Tsui, K.L., "A Comparison of Likelihood-based Spatiotemporal Monitoring Methods Under Non-homogeneous Population Size", Communications in Statistics - Simulation and Computation, 44(1):14-39; DOI:10.1080/03610918.2013.763981, 2014.
  56. Li, M., Lu, S., Guo, J., Tsui, K.L., "Study on Flame Spread over Aviation Kerosene and Diesel", Advanced Materials Research, 1016: 587-591, 2014.
  57. Shu L, Ling MH, Wong SY, Tsui, K.L., "Spatial Clustering in Public Health: Advances and Challenges. In: Yang, H., Kundakcioglu. Healthcare Intelligence: Turning Data into Knowledge", IEEE Intelligent Systems, 29(3):65-68, 2014.
  58. Li M, Lu S, Guo J, Chen R, Tsui, K.L., "Initial fuel temperature effects on flame spread over aviation kerosene in low- and high-altitude environments", Fire Technology, DOI:10.1007/s10694-014-0395-4, 2014.
  59. Li M, Lu S, Guo J, Chen R, Tsui, K.L., "Flame spread over n-butanol at sub-flash temperature in normal and elevated altitude environments", Journal of Termal Analysis and Calorimetry, 119(1):401-409, 2015.
  60. Li M, Lu S, Guo J, Wu X, Tsui, K.L., "Effects of pool dimension on flame spread of aviation kerosene coating on a metal substrate", International Journal of Heat and Mass Transfer, 84:54-60, 2015.

In Press

  1. J1. Ye ZS, Chen N, Tsui KL. A Bayesian Approach to Condition Monitoring with Imperfect Inspections. IEEE Transactions on Reliability. 2013; in press.
  2. Ling MH, Tsui KL, Balakrishnan N. Accelerated Degradation Analysis for the Quality of a System Based on the Gamma Process. IEEE Transactions on Reliability. 2014; in press.
  3. Zhao H, Shu L, Tsui KL. A Window-Limited Generalized Likelihood Ratio Test for Monitoring Poisson Processes with Linear Drifts. Journal of Statistical Computation and Simulation. 2014; in press.
  4. Ling MH, Wong SY, Tsui KL. Efficient heterogeneous sampling for stochastic simulation with an illustration in healthcare applications. Communications in Statistics - Simulation and Computation. 2014; in press.
  5. Tsui KL, Chen N, Zhou Q, Hai Y, Wang W. Prognostics and Health Management: A Review on Data Driven Approaches. Mathematical Problems in Engineering. 2014; in press.
  6. Zhao HH, Shu LJ, Jiang W, Tsui KL. An Adaptive CUSUM Chart for Monitoring Poisson Rates with Increasing Population Sizes. European Journal of Industrial Engineering. 2014; in press.
  7. Ng SSY, Cabrera J, Tse PWT, Tsui KL. Distance-based analysis of dynamical systems reconstructed from vibrations for bearing diagnostics. Nonlinear Dynamics. 2014; in press.
  8. Liu S, Lo S, Tsui, K.L., Wang W. Modeling Movement Direction Choice and Collision Avoidance in Agent-Based Model for Pedestrian Flow. Journal of Transportation Engineering. 2015; 04015001, in press.

Last modified on 22 September, 2017