Travel time analysis for general item location assignment in a rectangular warehouse. - Ek Peng Chew; Loon Ching Tang (Eur. J. Oper. Res., 1999)

Efficient simulation procedures: a simulation study on sampling and selecting under fixed computing budget. - Loo Hay Lee; Ek Peng Chew (WSC, 2003)

Simulation of airports/aviation systems: discrete event simulation model for airline operations: SIMAIR. - Loo Hay Lee; Huei Chuen Huang; Chulung Lee; Ek Peng Chew; Wikrom Jaruphongsa; Yean Yik Yong; Zhe Liang; Chun How Leong; Yen Ping Tan; Kalyan Namburi; Ellis L. Johnson; Jerry Banks (WSC, 2003)

Optimal Computing Budget Allocation for Multi-Objective Simulation Models. - Loo Hay Lee; Ek Peng Chew; Suyan Teng; David Goldsman (WSC, 2004)

Application of multi-objective simulation-optimization techniques to inventory management problems. - Loo Hay Lee; Suyan Teng; Ek Peng Chew; Iftekhar A. Karimi; Kong Wei Lye; Peter Lendermann; Yankai Chen 002; Choon Hwee Koh (WSC, 2005)

A two-echelon inventory system with transportation capacity constraint. - H. C. Huang; Ek Peng Chew; K. H. Goh (Eur. J. Oper. Res., 2005)

A dynamic joint replenishment policy with auto-correlated demand. - Loo Hay Lee; Ek Peng Chew (Eur. J. Oper. Res., 2005)

Production planning with approved vendor matrices for a hard-disk drive manufacturer. - Loo Hay Lee; Ek Peng Chew; T. S. Ng (Eur. J. Oper. Res., 2005)

Integration of statistical selection with search mechanism for solving multi-objective simulation-optimization problems. - Loo Hay Lee; Ek Peng Chew; Suyan Teng (WSC, 2006)

Short-term booking of air cargo space. - Ek Peng Chew; Huei Chuen Huang; Ellis L. Johnson; George L. Nemhauser; Joel S. Sokol; Chun How Leong (Eur. J. Oper. Res., 2006)

A general framework on the simulation-based optimization under fixed computing budget. - Loo Hay Lee; Ek Peng Chew; Puvaneswari Manikam (Eur. J. Oper. Res., 2006)

Build-pack planning for hard disk drive assembly with approved vendor matrices and stochastic demands. - T. S. Ng; Loo Hay Lee; Ek Peng Chew (Eur. J. Oper. Res., 2006)

An optimization model for storage yard management in transshipment hubs. - Loo Hay Lee; Ek Peng Chew; Kok Choon Tan; Yongbin Han (OR Spectr., 2006)

Simultaneous fleet assignment and cargo routing using benders decomposition. - D. Li; Huei Chuen Huang; A. D. Morton; Ek Peng Chew (OR Spectr., 2006)

Finding the pareto set for multi-objective simulation models by minimization of expected opportunity cost. - Loo Hay Lee; Ek Peng Chew; Suyan Teng (WSC, 2007)

A simulation study on the uses of shuttle carriers in the container yard. - Loo Hay Lee; Ek Peng Chew; Kok Choon Tan; Huei Chuen Huang; Wenquan Lin; Yongbin Han; Tian Heong Chan (WSC, 2007)

Multi-objective ordinal optimization for simulation optimization problems. - Suyan Teng; Loo Hay Lee; Ek Peng Chew (Autom., 2007)

An integrated and adaptive decision-support framework for high-tech manufacturing and service networks. - Peter Lendermann; Stephen John Turner; Malcolm Y. H. Low; Boon Ping Gan; Nirupam Julka; Lai Peng Chan; Wentong Cai 001; Loo Hay Lee; Ek Peng Chew; Suyan Teng; Leon F. McGinnis (J. Simulation, 2007)

A heuristic to solve a sea cargo revenue management problem. - Loo Hay Lee; Ek Peng Chew; Mong Soon Sim (OR Spectr., 2007)

Evolutionary Algorithm for an Inventory Location Problem. - Ek Peng Chew; Loo Hay Lee; Kanshukan Rajaratnam (Evolutionary Scheduling, 2007)

A study on port design automation concept. - Loo Hay Lee; Ek Peng Chew; Hai Xing Cheng; Yongbin Han (WSC, 2008)

Multi-objective simulation-based evolutionary algorithm for an aircraft spare parts allocation problem. - Loo Hay Lee; Ek Peng Chew; Suyan Teng; Yankai Chen 002 (Eur. J. Oper. Res., 2008)

A yard storage strategy for minimizing traffic congestion in a marine container transshipment hub. - Yongbin Han; Loo Hay Lee; Ek Peng Chew; Kok Choon Tan (OR Spectr., 2008)

Differentiated service inventory optimization using nested partitions and MOCBA. - Ek Peng Chew; Loo Hay Lee; Suyan Teng; Choon Hwee Koh (Comput. Oper. Res., 2009)

Computing budget allocation rules for multi-objective simulation models based on different measures of selection quality. - Loo Hay Lee; Ek Peng Chew; Suyan Teng (Autom., 2010)

Integration of indifference-zone with multi-objective computing budget allocation. - Suyan Teng; Loo Hay Lee; Ek Peng Chew (Eur. J. Oper. Res., 2010)

IT-based planning and control of seaport container terminals and freight transportation systems. - Ek Peng Chew; Hans-Otto Günther; Kap Hwan Kim; Herbert Kopfer (OR Spectr., 2010)

Component allocation and ordering policy in a multi-component, multi-product assembled to stock system. - Ek Peng Chew; Loo Hay Lee; Yew Loon Lau (OR Spectr., 2010)

An optimisation framework for yard planning in a container terminal: case with automated rail-mounted gantry cranes. - Liang-Ping Ku; Loo Hay Lee; Ek Peng Chew; Kok Choon Tan (OR Spectr., 2010)

Vehicle dispatching algorithms for container transshipment hubs. - Loo Hay Lee; Ek Peng Chew; Kok Choon Tan; Yuan Wang 003 (OR Spectr., 2010)

A Simulation Optimisation Framework for Container Terminal Layout Design. - Loo Hay Lee; Ek Peng Chew; Kee Hui Chua; Zhuo Sun; Lu Zhen (Multi-objective Evolutionary Optimisation for Product Design and Manufacturing, 2011)

Multi-objective COMPASS for discrete optimization via simulation. - Loo Hay Lee; Ek Peng Chew; Haobin Li (WSC, 2011)

Simulation optimization using the particle swarm optimization with optimal computing budget allocation. - Si Zhang; Pan Chen; Loo Hay Lee; Ek Peng Chew; Chun-Hung Chen (WSC, 2011)

A decision model for berth allocation under uncertainty. - Lu Zhen; Loo Hay Lee; Ek Peng Chew (Eur. J. Oper. Res., 2011)

An Integrated Model for Berth Template and Yard Template Planning in Transshipment Hubs. - Lu Zhen; Ek Peng Chew; Loo Hay Lee (Transp. Sci., 2011)

An improved simulation budget allocation procedure to efficiently select the optimal subset of many alternatives. - Si Zhang; Loo Hay Lee; Ek Peng Chew; Chun-Hung Chen; Henyi Jen (CASE, 2012)

Efficient computing budget allocation for a single design by using regression with sequential sampling constraint. - Xiang Hu; Loo Hay Lee; Ek Peng Chew; Douglas J. Morrice; Chun-Hung Chen (WSC, 2012)

Optimization via gradient oriented polar random search. - Haobin Li; Loo Hay Lee; Ek Peng Chew (WSC, 2012)

MicroPort: A general simulation platform for seaport container terminals. - Zhuo Sun; Loo Hay Lee; Ek Peng Chew; Kok Choon Tan (Adv. Eng. Informatics, 2012)

A container yard storage strategy for improving land utilization and operation efficiency in a transshipment hub port. - Xinjia Jiang; Loo Hay Lee; Ek Peng Chew; Yongbin Han; Kok Choon Tan (Eur. J. Oper. Res., 2012)

The sample average approximation method for empty container repositioning with uncertainties. - Yin Long; Loo Hay Lee; Ek Peng Chew (Eur. J. Oper. Res., 2012)

Integrated inventory and transportation decision for ubiquitous supply chain management. - Ki-sung Hong; Sang Soo Yeo; Hyoung Joong Kim; Ek Peng Chew; Chulung Lee (J. Intell. Manuf., 2012)

DEA based on strongly efficient and inefficient frontiers and its application on port efficiency measurement. - Jianlin Jiang; Ek Peng Chew; Loo Hay Lee; Zhuo Sun (OR Spectr., 2012)

A Comparative Study on Two Types of Automated Container Terminal Systems. - Lu Zhen; Loo Hay Lee; Ek Peng Chew; Dao-Fang Chang; Zhi-Xiang Xu (IEEE Trans Autom. Sci. Eng., 2012)

Storage yard management for transshipment ports. - Xinjia Jiang; Loo Hay Lee; Ek Peng Chew; Kok Choon Tan (CASE, 2013)

Dynamic rationing and ordering policies for multiple demand classes. - Ek Peng Chew; Loo Hay Lee; Shudong Liu 003 (OR Spectr., 2013)

The impact of supply chain visibility when lead time is random. - Ek Peng Chew; Loo Hay Lee; Chee-Khian Sim (OR Spectr., 2013)

Flexible space-sharing strategy for storage yard management in a transshipment hub port. - Xinjia Jiang; Ek Peng Chew; Loo Hay Lee; Kok Choon Tan (OR Spectr., 2013)

Design and evaluation of mega container terminal configurations: An integrated simulation framework. - Zhuo Sun; Kok Choon Tan; Loo Hay Lee; Ek Peng Chew (Simul., 2013)

A simulation study for next generation transshipment port. - Loo Hay Lee; Ek Peng Chew; Xinjia Jiang; Chenhao Zhou 001 (WSC, 2014)

A study on multi-objective particle swarm optimization with weighted scalarizing functions. - Loo Hay Lee; Ek Peng Chew; Qian Yu; Haobin Li; Yue Liu (WSC, 2014)

Impacts of supplier knowledge sharing competences and production capacities on radical innovative product sourcing. - Shao Wei Lester Eng; Ek Peng Chew; Loo Hay Lee (Eur. J. Oper. Res., 2014)

A decomposition method to analyze the performance of frame bridge based automated container terminal. - Hongtao Hu 001; Youfang Huang; Lu Zhen; Byung Kwon Lee; Loo Hay Lee; Ek Peng Chew (Expert Syst. Appl., 2014)

Short-term space allocation for storage yard management in a transshipment hub port. - Xinjia Jiang; Ek Peng Chew; Loo Hay Lee; Kok Choon Tan (OR Spectr., 2014)

Analysis on container port capacity: a Markovian modeling approach. - Byung Kwon Lee; Loo Hay Lee; Ek Peng Chew (OR Spectr., 2014)

Dynamic determination of vessel speed and selection of bunkering ports for liner shipping under stochastic environment. - Xiaoming Sheng; Loo Hay Lee; Ek Peng Chew (OR Spectr., 2014)

A three-echelon system dynamics model on supply chain risk mitigation through information sharing. - Haobin Li; Loo Hay Lee; Ek Peng Chew; Yuanjie Long (WSC, 2015)

Multi-objective multi-fidelity optimization with ordinal transformation and optimal sampling. - Haobin Li; Yueqi Li; Loo Hay Lee; Ek Peng Chew; Giulia Pedrielli; Chun-Hung Chen (WSC, 2015)

Multi-objective optimization for a hospital inpatient flow process via discrete event simulation. - Yang Wang; Loo Hay Lee; Ek Peng Chew; Sean Shao Wei Lam; Seng Kee Low; Marcus Eng Hock Ong; Haobin Li (WSC, 2015)

A comprehensive study on new conceptual container handling system. - Chenhao Zhou 001; Ek Peng Chew; Loo Hay Lee (WSC, 2015)

Sample average approximation under non-i.i.d. sampling for stochastic empty container repositioning problem. - Yin Long; Ek Peng Chew; Loo Hay Lee (OR Spectr., 2015)

V-shaped sampling based on Kendall-Distance to enhance optimization with ranks. - Haobin Li; Giulia Pedrielli; Min Chen; Loo Hay Lee; Ek Peng Chew; Chun-Hung Chen (WSC, 2016)

Hybrid order picking strategies for fashion E-commerce warehouse systems. - Giulia Pedrielli; Albert Vinsensius; Ek Peng Chew; Loo Hay Lee; Alessandro Duri; Haobin Li (WSC, 2016)

Quantifying the Effect of Sharing Information in a Supply Chain Facing Supply Disruptions. - Yi Tao; Loo Hay Lee; Ek Peng Chew (Asia Pac. J. Oper. Res., 2016)

Multi-objective optimal computing budget allocation for multi-objective particle swarm optimisation with particle-dependent weights. - Yue Liu; Loo Hay Lee; Ek Peng Chew (Int. J. Simul. Process. Model., 2016)

An introduction and performance evaluation of the GRID system for transshipment terminals. - Chenhao Zhou 001; Ek Peng Chew; Loo Hay Lee; Daqi Liu (Simul., 2016)

A Simulation Budget Allocation Procedure for Enhancing the Efficiency of Optimal Subset Selection. - Si Zhang; Loo Hay Lee; Ek Peng Chew; Jie Xu 004; Chun-Hung Chen (IEEE Trans. Autom. Control., 2016)

Improving Analytic Hierarchy Process Expert Allocation Using Optimal Computing Budget Allocation. - Edward Huang; Si Zhang; Loo Hay Lee; Ek Peng Chew; Chun-Hung Chen (IEEE Trans. Syst. Man Cybern. Syst., 2016)

Capacitated competitive facility location problem of self-collection lockers by using public big data. - Yuan Wang 003; Titus Ong; Loo Hay Lee; Ek Peng Chew (CASE, 2017)

Information based approach for sort operation in logistic industry. - Chenhao Zhou 001; Aloisius Stephen; Haobin Li; Loo Hay Lee; Ek Peng Chew (CASE, 2017)

A hierarchical modeling paradigm for multi-fidelity simulation of mega container terminals. - Haobin Li; Chenhao Zhou 001; Byung Kwon Lee; Loo Hay Lee; Ek Peng Chew (SII, 2017)

Efficient computing budget allocation for optimal subset selection with correlated sampling. - Si Zhang; Loo Hay Lee; Ek Peng Chew; Chun-Hung Chen (SII, 2017)

Optimal computing budget allocation via sampling based unbiased approximation. - Xiao Jin; Haobin Li; Loo Hay Lee; Ek Peng Chew (WSC, 2017)

A modularized simulation for traffic network in container terminals via network of servers with dynamic rates. - Chenhao Zhou 001; Loo Hay Lee; Ek Peng Chew; Haobin Li (WSC, 2017)

A capacity pricing and reservation problem under option contract in the air cargo freight industry. - Yi Tao; Ek Peng Chew; Loo Hay Lee; Lu Wang (Comput. Ind. Eng., 2017)

Tree based searching approaches for integrated vehicle dispatching and container allocation in a transshipment hub. - Yuan Wang 003; Xinjia Jiang; Loo Hay Lee; Ek Peng Chew; Kok Choon Tan (Expert Syst. Appl., 2017)

A column generation approach for the route planning problem in fourth party logistics. - Yi Tao; Ek Peng Chew; Loo Hay Lee; Yuran Shi (J. Oper. Res. Soc., 2017)

GO-POLARS: A Steerable Stochastic Search on the Strength of Hyperspherical Coordinates. - Haobin Li; Loo Hay Lee; Ek Peng Chew; Chun-Hung Chen (IEEE Trans. Autom. Control., 2017)

Optimal Computing Budget Allocation for Particle Swarm Optimization in Stochastic Optimization. - Si Zhang; Jie Xu 004; Loo Hay Lee; Ek Peng Chew; Wai Peng Wong; Chun-Hung Chen (IEEE Trans. Evol. Comput., 2017)

Single Direction Traffic Rule for GRID System - An Innovative Automated Material Handling System. - Chenhao Zhou 001; Haobin Li; Loo Hay Lee; Ek Peng Chew (CASE, 2018)

Challenges and Opportunities in Integration of simulation and Optimization in maritime Logistics. - Chenhao Zhou 001; Haobin Li; Weizhi Liu; Aloisius Stephen; Loo Hay Lee; Ek Peng Chew (WSC, 2018)

Analysis on high throughput layout of container yards. - Byung Kwon Lee; Loo Hay Lee; Ek Peng Chew (Int. J. Prod. Res., 2018)

Optimal Computing Budget Allocation to Select the Nondominated Systems - A Large Deviations Perspective. - Juxin Li; Weizhi Liu; Giulia Pedrielli; Loo Hay Lee; Ek Peng Chew (IEEE Trans. Autom. Control., 2018)

Frame Trolley Dispatching Algorithm for the Frame Bridge Based Automated Container Terminal. - Xinjia Jiang; Yanhua Xu 004; Chenhao Zhou 001; Ek Peng Chew; Loo Hay Lee (Transp. Sci., 2018)

Information-Based Allocation Strategy for GRID-Based Transshipment Automated Container Terminal. - Chenhao Zhou 001; Ek Peng Chew; Loo Hay Lee (Transp. Sci., 2018)

Optimal Computing Budget Allocation for Binary Classification with Noisy Labels and its Applications on Simulation Analytics. - Weizhi Liu; Haobin Li; Loo Hay Lee; Ek Peng Chew; Hui Xiao 001 (WSC, 2019)

Combining Adaptive Budget Allocation with Surrogate Methodology in Solving Continuous Scenario-based Simulation Optimization. - Xiao Jin; Yichi Shen; Haobin Li; Loo Hay Lee; Ek Peng Chew; Christine A. Shoemaker (CASE, 2020)

A Hybrid of Shrinking Ball Method and Optimal Large Deviation Rate Estimation in Continuous Contextual Simulation Optimization with Single Observation. - Xiao Jin; Yichi Shen; Loo Hay Lee; Ek Peng Chew; Christine A. Shoemaker (WSC, 2020)

Framework of O2DES.NET Digital Twins for Next Generation Ports and Warehouse Solutions. - Haobin Li; Xinhu Cao; Pankaj Sharma 001; Loo Hay Lee; Ek Peng Chew (WSC, 2020)

Dynamic Incentive Mechanism for Delivery Slot Management in E-Commerce Attended Home Delivery. - Albert Vinsensius; Yuan Wang 003; Ek Peng Chew; Loo Hay Lee (Transp. Sci., 2020)

Three Carriages Driving the Development of Intelligent Digital Twins-Simulation Plus Optimization and Learning. - Haobin Li; Xinhu Cao; Xiao Jin; Loo Hay Lee; Ek Peng Chew (WSC, 2021)

A Unified Offline-Online Learning Paradigm via Simulation for Scenario-Dependent Selection. - Haitao Liu; Xiao Jin; Haobin Li; Loo Hay Lee; Ek Peng Chew (WSC, 2021)

Analytics with digital-twinning: A decision support system for maintaining a resilient port. - Chenhao Zhou 001; Jie Xu 004; Elise Miller-Hooks; Weiwen Zhou; Chun-Hung Chen; Loo Hay Lee; Ek Peng Chew; Haobin Li (Decis. Support Syst., 2021)

Classification and literature review on the integration of simulation and optimization in maritime logistics studies. - Chenhao Zhou 001; Ning Ma; Xinhu Cao; Loo Hay Lee; Ek Peng Chew (IISE Trans., 2021)

Hybrid Simulation Modeling Formalism via O2DES Framework for Mega Container Terminals. - Haobin Li; Xinhu Cao; Ek Peng Chew; Kok Choon Tan; Kaustav Kundu; Hongdan Chen (WSC, 2022)

Multi-Fidelity Discrete Optimization via Simulation. - Dongyang Li; Haitao Liu; Xiao Jin; Haobin Li; Ek Peng Chew; Kok Choon Tan; Yun Hui Lin (WSC, 2022)

Performance Estimation and Design Optimization of a Congested Automated Container Terminal. - Xi Xiang; Changchun Liu; Loo Hay Lee; Ek Peng Chew (IEEE Trans Autom. Sci. Eng., 2022)

Deep Learning Models for Inventory Decisions: A Comparative Analysis. - Thais de Castro Moraes; Xue-Ming Yuan; Ek Peng Chew (IntelliSys (2), 2023)

Cluster-Based Sampling Allocation for Multi-Fidelity Simulation Optimization. - Zirui Cao; Haobin Li; Ek Peng Chew; Haowei Wang; Kok Choon Tan (WSC, 2023)

An adaptive large neighborhood search algorithm for the tugboat scheduling problem. - Xin Wang; Yijing Liang; Xiaoyang Wei 003; Ek Peng Chew (Comput. Ind. Eng., 2023)

Reinforcement Learning-based approach for dynamic vehicle routing problem with stochastic demand. - Chenhao Zhou 001; Jingxin Ma; Louis Douge; Ek Peng Chew; Loo Hay Lee (Comput. Ind. Eng., 2023)

Heuristics for the two-dimensional irregular bin packing problem with limited rotations. - Sifan Cai; Jie Deng; Loo Hay Lee; Ek Peng Chew; Haobin Li (Comput. Oper. Res., 2023)

Marginal improvement procedures for top-m selection. - Haitao Liu; Zheng Xing; Hui Xiao; Ek Peng Chew (Autom., 2024)

Integrated optimization of pilot and pilot carrier routing in seaports. - Xin Wang 145; Yijing Liang; Ek Peng Chew; Haobin Li; Kok Choon Tan (Comput. Oper. Res., 2024)

Multiagent Q-Learning Approach for the Recharging Scheduling of Electric Automated Guided Vehicles in Container Terminals. - Chenhao Zhou 001; Aloisius Stephen; Kok Choon Tan; Ek Peng Chew; Loo Hay Lee (Transp. Sci., 2024)

An Adaptive Dynamic Scheduling Policy for the Integrated Optimization Problem in Automated Transshipment Hubs. - Xi Xiang; Loo Hay Lee; Ek Peng Chew (IEEE Trans Autom. Sci. Eng., 2024)

Offshore consolidation centre for air cargo operations: model and solution methods. - Xin Chu; Yuan Wang; Yun Hui Lin; Ek Peng Chew (OR Spectr., 2024)

A data-driven approach to solving the container relocation problem with uncertainties. - Zhanluo Zhang; Kok Choon Tan; Wei Qin; Ek Peng Chew; Yan Li (Adv. Eng. Informatics, 2025)

A budget-adaptive allocation rule for optimal computing budget allocation. - Zirui Cao; Haowei Wang; Ek Peng Chew; Haobin Li; Kok Choon Tan (Eur. J. Oper. Res., 2025)

Optimization of multistage timeliness transit consolidation problem using adaptive-weighted genetic algorithm. - Bowen Lv; Bin Yang; Ek Peng Chew (Ann. Oper. Res., 2025)