Publications

Preprints

P1Carbon Revenue Distribution in International Shipping, Chai K.H., Ng S.H., Ang B.W., Tham A.G.Y. (2025)CMSDownload
P2A Data-Driven Bayesian Nonparametric Approach for Black-Box Optimization, Wang H., Zhang X., Ng S.H., Wang S. (2024)arXivDownload
P3Navigating IMO Net-Zero Framework: Potential Challenges and Refinements, Jafari I., Soudagar I., Ng S.H. (2025)CMSDownload
P4Bayesian Optimization with Expected Improvement: No Regret and the Choice of Incumbent, Wang J., Wang H., Ng S.H., Petra C. G. (2025)arXivDownload
P5An Online Non-Stationary Simulation Optimization Approach Based on Regime Switching, Xia J., Wang H., Wang S., Ng S. H. (2025)arXivDownload

Journals

J1A Model Aggregation Approach for High-dimensional Large-scale Optimization, Wang H., Zhang E., Ng S.H., Pedrielli G. (2025)European Journal of Operational Research, to appearDownload
J2Predictive Modeling for Levelized Cost of Green Ammonia, Özmen A., Ng S.H. (2025)Applied Energy, 398, 126399Download
J3Adjusted Expected Improvement for Cumulative Regret Minimization in Noisy Bayesian Optimization, Hu S., Wang H., Dai Z., Low B.K.H., Ng S.H. (2025)Journal of Machine Learning Research, 26(46), 1-33Download
J4Enhanced Global Optimization with Parallel Global and Local Structures for Real-Time Control Systems, Meng Q., Wang H. Wang S., Ng S.H. (2024)IEEE Transactions on Automation Science and Engineering, 21(3), 3298 – 3309Download
J5Robust Prediction of Residual Chlorine Decay in A Drinking Water Distribution System Integrating Water Quality Sensing and Predictive Tools, Jafari I., Luo R., Ng E., Corral F., Chua Y., Ng S.H., Hu J. (2024)ACS ES&T Water, 4(12), 5506 – 5521Download
J6The decarbonization pathway of power system by high-resolution model under different policy scenarios in China, Wang Z., Li J., Wang B., Ng S.H., Lu B., Wang C., Xu S., Zhou Z., Zhang B., Zheng Y. (2024)Applied Energy, 355, 122235Download
J7Impact analysis of environmental policies on shipping fleet planning under demand uncertainty, Chua Y.J., Soudagar I., Ng S.H., Meng Q. (2023)Transportation Research Part D, 120, 103744Download
J8Machine-learning-assisted prediction and optimized kinetic modelling of residual chlorine decay for enhanced water quality management, Jafari I., Luo R., Lim F.Y., Ng S.H., Hu J. (2023)Chemosphere, 341, 140011Download
J9Combined Global and Local Optimization with Gaussian Process Models, Meng Q., Wang S., Ng S.H. (2022)INFORMS Journal on Computing, 34(1), 622-637Download
J10A Multi-Level Simulation Optimization Approach for Quantile Functions, Wang S., Ng S.H., Haskell W.B. (2022)INFORMS Journal on Computing, 34(1), 569-585Download
J11Reducing the carbon intensity of international shipping – the impact of energy efficiency measures, Sou S.W., Goh T., Lee X.N., Ng S.H., Chai K.H. (2022)Energy Policy, 170, 113239Download
J12Driving Factors of Changes in International Maritime Energy Consumption: Microdata Evidence 2014 – 2017, Goh T., Zhong S., Ang B.W., Su B., Ng S.H., Chai K.H. (2021)Energy Policy, 154, 112288Download
J13Stochastic Optimization with Adaptive Restart: A Framework for Integrated Local and Global Learning, Mathesen L., Pedrielli G., Ng S.H., Zabinsky Z. (2021)Journal of Global Optimization, 79, 87-110Download
J14An Extended Two-Stage Sequential Optimization Approach: Properties and Performance, Pedrielli G., Wang S., Ng S.H. (2020)European Journal of Operational Research, 287(3), 929-945Download
J15Enhancing Response Predictions with a Joint Gaussian Process Model for Stochastic Simulation Models, Wang S., Ng S.H. (2020)ACM Transactions on Modeling and Computer Simulation, 30, no.1, Article 4Download
J16An Integrated Method for Simultaneous Calibration and Parameter Selection in Computer Models, Yuan J., Ng S.H. (2020)ACM Transactions on Modeling and Computer Simulation, 30, no.1, Article 7Download
J17Gaussian Process Based Optimization Algorithms with Input Uncertainty, Wang H., Yuan J., Ng S.H. (2020)IISE Transactions, 52(4), 377-393Download
J18Bayesian Optimal Designs for Efficient Estimation of the Optimum Point with Generalised Linear Models, Li G., Ng S.H., Tan M.H.Y. (2020)Quality Technology & Quantitative Management, 17(1), 89-107Download
J19Ship Emission Mitigation Strategies Choice Under Uncertainty, Yuan J., Wang H., Ng S.H., Nian V. (2020)Energies, 13(9), 2213-2223Download
J20A Real Time Simulation Optimization Framework for Vessel Collision Avoidance, Pedrielli G., Xing Y., Peh J., Koh K.W., Ng S.H. (2020)IEEE Transactions on Intelligent Transportation Systems, 21(3), 1204-1215Download
J21A Data-Driven Online Truncation Method for Transient Bias Reduction in Steady-State Simulations, Zhang N., Yuan J., Ng S.H. (2019)Computers and Industrial Engineering, 135, 723-745Download
J22Metamodel-Based Optimization of Stochastic Computer Models for Engineering Design Under Uncertain Objective Function, Li G., Tan M.H.Y., Ng S.H. (2019)IISE Transactions, 51(5), 517-530Download
J23A Multilevel Zero-Inflated Model for the Study of Copper Hillocks Growth in Integrated Circuits Manufacturing, Li G., Tan K.K.R., Ng S.H., Chua D.H.C. (2018)IEEE Transactions on Semiconductor Manufacturing, 31(3), 385-394Download
J24A framework for real-time monitoring of energy efficiency of marine vessels, Chi H., Pedrielli G., Ng S.H., Kister T., Bressan S. (2018)Energy, 145, 246-260Download
J25Emission reduction measures ranking under uncertainty, Yuan J., Ng S.H. (2017)Applied Energy, 188, 270-279Download
J26Uncertainty quantification of CO2 emission reduction for maritime shipping, Yuan J., Ng S.H., Sou W.S. (2016)Energy Policy, 88, 113-130Download
J27Shipping efficiency comparison between Northern Sea Route and the conventional Asia-Europe shipping route via Suez Canal, Zhang Y., Meng Q., Ng S.H. (2016)Journal of Transport Geography, 57, 241-249Download
J28Optimal bunkering contract in a buyer–seller supply chain under price and consumption uncertainty, Pedrielli G., Lee L.H., Ng S.H. (2015)Transportation Research Part E: Logistics and Transportation Review, 77, 77-94Download
J29Bunkering decisions for a shipping liner in an uncertain environment with service contract, Ghosh S., Lee L.H., Ng S.H. (2015)European Journal of Operational Research, 244, no. 3, 792-802Download
J30Calibration, Validation and Prediction in Random Simulation Models, Yuan J., Ng S.H. (2015)ACM Transactions on Modeling and Computer Simulation, 25, no.3, Article 18Download
J31A Study of N-version programming and its impact on software availability, Xie M., Xiong C., Ng S.H. (2014)International Journal of System Science, 45, no.10, 2145-2157Download
J32Simulation Optimization via Kriging: A Sequential Search using Expected Improvement with Computing Budget Constraints, Quan N., Yin J., Ng S.H., Lee L.H. (2013)IIE Transactions, 45, no.7, 763-780Download
J33A Sequential Approach for Stochastic Computer Model Calibration and Prediction, Yuan J., Ng S.H. (2013)Reliability Engineering and System Safety, 111, 273-286Download
J34Calibration of Stochastic Computer Models Using Stochastic Approximation Methods, Yuan J., Ng S.H., Tsui K.L. (2013)IEEE Transactions on Automation Science and Engineering, 10, no.1, 171-186Download
J35Bayesian Kriging Analysis and Design for Stochastic Simulations, Ng S.H., Yin J. (2012)ACM Transactions on Modeling and Computer Simulation, vol.22, no.3, Article 17Download
J36A Study on Bunker Fuel Management for Shipping Liner Services, Yao Z., Ng S.H., Lee L.H. (2012)Computers & Operations Research, 39, 1160-1172Download
J37Multi-Objective Optimization Approaches to Software Release Time Determination, Li X., Xie M., Ng S.H. (2012)Asia-Pacific Journal of Operational Research, 29, no. 3, 209-226Download
J38Element Maintenance and Allocation for Linear Consecutively Connected Systems, Peng R., Xie M., Ng S.H., Levitin G. (2012)IIE Transactions, 44, no.11, 964-973Download
J39False targets vs. protection in defending parallel systems against unintentional and intentional impacts, Levitin G., Peng R., Xie M., Ng S.H., Haim H.B. (2012)International Journal of Performability Engineering, 8(5), 465-478
J40Kriging Metamodel with Modified Nugget-Effect: The heteroscedastic variance case, Yin J., Ng S.H., Ng K.M. (2011)Computers & Industrial Engineering, 61, 760-777Download
J41Reliability Analysis and Optimal Version Updating for Open-Source Software, Li X., Li Y.F., Xie M., Ng S.H. (2011)Information and Software Technology, 53, no.9, 929-936Download
J42Risk-based Software Release Policy under Parameter Uncertainty, Xie M., Li X., Ng S.H. (2011)Journal of Risk and Reliability, 225, no.1, 42-49Download
J43Optimal Defence of Single Object with Imperfect False Targets, Peng R., Levitin G., Xie M., Ng S.H. (2011)Journal of the Operational Research Society, 62, no. 1, 134-141Download
J44Optimal Software Maintenance Policy considering Unavailable Time, Xiong C.J., Xie M., Ng S.H. (2011)Journal of Software Maintenance and Evolution, 23, no. 1, 21-33Download
J45Sensitivity Analysis of Release Time of Software Reliability Models Incorporating Testing Effort with Multiple Change-points, Li X., Xie M., Ng S.H. (2010)Applied Mathematical Modelling, 34, no.11, 3560-3570Download
J46Defending Simple Series and Parallel Systems with Imperfect False Targets, Peng R., Levitin G., Xie M., Ng S.H. (2010)Reliability Engineering and System Safety, 95, no.6, 679-688Download
J47Nonparametric CUSUM and EWMA control charts for detecting mean shifts, Li S.Y., Tang L.C., Ng S.H. (2010)Journal of Quality Technology, 42, no. 2, 209-226Download
J48A Bayesian Model Averaging Approach for Multiple Response Optimization, Ng S.H. (2010)Journal of Quality Technology, 42, no. 1, 52-68Download
J49A Systematic Comparison of Metamodeling Techniques for Simulation Optimization in Decision Support Systems, Li Y.F., Ng S.H., Xie M., Goh T.N. (2010)Applied Soft Computing, 10, 1257-1273Download
J50Estimation of the Mean and Variance Response Surfaces when the Means and Variances of the Noise Variables are Unknown, Tan M.H.Y., Ng S.H. (2009)IIE Transactions, 41, no. 11, 942-956Download
J51Reliability Analysis and Optimization of Weighted Voting Systems with Continuous States Input, Long Q., Xie M., Ng S.H., Levitin G. (2008)European Journal of Operational Research, 191, no. 1, 240-252Download
J52On the Trend of Remaining Software Defects Estimation, Bai C.G., Cai K.Y., Hu Q.P., Ng S.H. (2008)IEEE Transactions on Systems, Man, and Cybernetics Part A – Systems and Humans, 38, no. 5, 1129-1142Download
J53Uncertainty Analysis in Software Reliability Modeling by Bayesian Approach with Maximum-Entropy Principle, Dai Y.S., Xie M., Long Q., Ng S.H. (2007)IEEE Transactions on Software Engineering, 33, no. 11, 781-795Download
J54Optimization of Multiple Response Surfaces with Secondary Constraints for Improving a Radiography Inspection Process, Ng S.H., Xu K., Wong W.K. (2007)Quality Engineering, 19, no. 1, 53-65Download
J55A Study of Software Fault Detection and Correction Modeling, Xie M., Hu Q.P., Wu Y.P., Ng S.H. (2007)Quality and Reliability Engineering International, 23, no. 4, 459-470Download
J56Modeling and Analysis of Software Fault Detection and Correction Process by Considering Time Dependency, Wu Y.P., Hu Q.P., Xie M., Ng S.H. (2007)IEEE Transactions on Reliability, 56, no. 4, 629-642Download
J57Robust Recurrent Neural Network Modeling for Software Fault Detection and Correction Prediction, Hu Q.P., Xie M., Ng S.H., Levitin G. (2007)Reliability Engineering and System Safety, 92, no. 3, 332-340Download
J58Software Reliability Predictions Using Artificial Neural Networks, Hu Q.P., Xie M., Ng S.H. (2007)Studies in Computational Intelligence, 40, 197-222Download
J59Two-Stage Computing Budget Allocation Approach for the Response Surface Method, Peng J., Lee L.H., Ng S.H. (2007)International Transactions in Operational Research (ITOR), 14, no. 6, 457-473Download
J60Reducing Parameter Uncertainty in Stochastic Systems, Ng S.H., Chick S.E. (2006)ACM Transactions on Modeling and Computer Simulation, 16, no. 1, 26-51Download
J61A Statistical Investigation and Optimization of an Industrial Radiography Inspection Process for Aero-Engine Components, Wong W.K., Ng S.H., Xu K. (2006)Quality and Reliability Engineering International, 22, no. 3, 321-334Download
J62Software Failure Prediction Based on a Markov Bayesian Network Model, Bai C.G., Hu Q.P., Xie M., Ng S.H. (2005)Journal of Systems and Software, 74, no. 3, 275-282Download
J63Reliability and Modelling of Systems Integrated with Firmware and Hardware, Zhang T., Xie M., Tang L.C., Ng S.H. (2005)International Journal of Reliability, Quality and Safety Engineering, 12, no. 3, 227-240Unavailable
J64A Model for Correlated Failures in N-Version Programming, Dai Y.S., Xie M., Poh K.L., Ng S.H. (2004)IIE Transactions, 36, no. 12, 1183-1192Download
J65Design of Follow-Up Experiments for Improving Model Discrimination and Parameter Estimation, Ng S.H., Chick S.E. (2004)Naval Research Logistics, 51, no. 8, 1129-1148Download

Selected articles in published conference proceedings

C1Convergence Rates of Constrained Expected Improvement, Wang H., J Wang J., Dai Z., Chiang N., Ng S.H., CG Petra (2025)Advances in Neural Information Processing Systems (NeurIPS),to appearDownload
C2A Trajectory-Based Bayesian Approach to Multi-Objective Hyperparameter Optimization with Epoch-Aware Trade-Offs, Wang W., Fan Z., Ng S.H. (2025)In 41st Conference on Uncertainty in Artificial Intelligence (UAI), 2025Download
C3Weighted Euclidean Distance Matrices over Mixed Continuous and Categorical Inputs for Gaussian Process Models, Pu M., Wang S., Wang W., Ng S.H. (2025)In International Conference on Artificial Intelligence and Statistics (AISTATS), pp. 4951-4959, 2025Download
C4Minimizing UCB: a Better Local Search Strategy in Local Bayesian Optimization, C1. Fan Z., Wang W., Ng S.H., Hu Q. (2024)Advances in Neural Information Processing Systems (NeurIPS), 2024Download
C5A Gaussian Process Based Algorithm for Stochastic Simulation Optimization with Input Distribution Uncertainty, Wang H., Ng S.H., Zhang X. (2020)Proceedings of the Winter Simulation Conference 2020Download
C6Stochastic Gaussian Process Model Averaging for High Dimensional Inputs, Xuereb M., Ng S.H., Pedrielli G. (2020)Proceedings of the Winter Simulation Conference 2020Download
C7Partition Based Bayesian Optimization for Stochastic Simulations, Wang S., Ng S.H. (2020)Proceedings of the Winter Simulation Conference 2020Download
C8Quantile Simulation Optimization with a Stochastic Co-Kriging Model, Wang S., Ng S.H., Haskell W.B. (2018)Proceedings of the Winter Simulation Conference 2018Download
C9Informational Approach to Global Optimization with Input Uncertainty for Homoscedastic Stochastic Simulation, Wang H., Yuan J., Ng S.H. (2018)Proceedings of the 2018 IEEE International Conference on Industrial Engineering and Engineering (received outstanding paper award)Download
C10A joint Gaussian process metamodel to improve quantile predictions, Wang S., Ng S.H. (2017)Proceedings of the Winter Simulation Conference 2017Download
C11Trust region based stochastic optimization with adaptive restart: A family of global optimization algorithms, Mathesen L., Pedrielli G., Ng S.H. (2017)Proceedings of the Winter Simulation Conference 2017Download
C12Enhancing pattern search for global optimization with an additive global and local Gaussian Process model, Meng Q., Ng S.H. (2017)Proceedings of the Winter Simulation Conference 2017Download
C13Combined global and local method for stochastic simulation optimization with an AGLGP model, Meng Q., Ng S.H. (2016)Proceedings of the Winter Simulation Conference 2016Download
C14An Additive Global and Local Gaussian Process Model for Large Data Sets, Meng Q., Ng S.H. (2015)Proceedings of the Winter Simulation Conference 2015Download
C15Kriging-based Simulation Optimization: A Stochastic Recursion Perspective, Pedrielli G., Ng S.H. (2015)Proceedings of the Winter Simulation Conference 2015Download
C16SNAT: Simulation-Based Search for Navigational Safety. The case of Singapore Strait, Chen X.Y., Pedrielli G., Ng S.H. (2014)Proceedings of the Winter Simulation Conference 2014, Pages 589-600, Institute of Electrical and Electronics Engineers. Savannah, USADownload
C17An Entropy Based Sequential Calibration Approach for Stochastic Computer Models, Yuan J., Ng S.H. (2013)Proceedings of the Winter Simulation Conference 2013, Pages 589-600, Institute of Electrical and Electronics Engineers. Washington D.C., USADownload
C18A Bayesian Metamodeling Approach for Stochastic Simulations, Yin J., Ng S.H., Ng K.M. (2010)Proceedings of the Winter Simulation Conference 2010, Pages 1055-1066, Institute of Electrical and Electronics Engineers. Baltimore, MD, USADownload
C19A Study on the Effects of Parameter Estimation on Kriging Model’s Prediction Error in Stochastic Simulations, Yin J., Ng S.H., Ng K.M. (2009)Proceedings of the Winter Simulation Conference 2009, Pages 674-685, Institute of Electrical and Electronics Engineers. Austin, Texas, USADownload
C20Kriging Model with Modified Nugget Effect, Yin J., Ng S.H., Ng K.M. (2008)Proceedings of the IEEE International Conference on Industrial Engineering and Engineering Management 2008, Pages 1714-1718, Institute of Electrical and Electronics Engineers. SingaporeDownload
C21Reliability Analysis of Weighted Voting Systems with Continuous State Input, Long Q., Xie M. and Ng S.H. (2006)Proceedings of the first IEEE International Conference on System Integration and Reliability Improvements. Hanoi, VietnamDownload
C22Early software reliability prediction with extended ANN model, Hu Q.P., Dai Y.S., Xie M. and Ng S.H. (2006)Proceedings of the IEEE International Computer Software and Applications Conference. Pages 1325-1331. Chicago, Illinois, USADownload
C23Reliability and modeling of systems integrated with firmware and hardware, Zhang T.L., Xie M., Tang L.C. and Ng S.H. (2004)Proceedings of 2004 Asian International Workshop on Advanced Reliability Modeling, Pages 617-624. Hiroshima City, Japan (received the best paper award)Download
C24Benchmarking of a Stochastic Production Planning Model in a Simulation Testbed, Riano G., Ng S.H., Serfozo R., Hackman S., Lendermann P., Chan L.P. (2003)Proceedings of the Winter Simulation Conference 2003, Volume 2, Pages 1183-1191, Institute of Electrical and Electronics Engineers. New Orleans, Louisiana, USADownload
C25Joint Criterion for Factor Identification and Parameter Estimation, Chick S.E., Ng S.H. (2002)Proceedings of the Winter Simulation Conference 2002, Volume 1, Pages 400-406, Institute of Electrical and Electronics Engineers. San Diego, California, USADownload
C26Reducing Input Parameter Uncertainty for Simulations, Ng S.H., Chick S.E. (2001)Proceedings of the Winter Simulation Conference 2001, Volume 1, Pages 364-371, Institute of Electrical and Electronics Engineers. Arlington, Virginia, USADownload