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Kim-Leng Poh
National University of Singapore
104Publications
26H-index
3,914Citations
Publications 104
Newest
#1Junfei Hu (NPU: Northwestern Polytechnical University)H-Index: 4
#2Peng Guo (NPU: Northwestern Polytechnical University)H-Index: 3
Last.Kim-Leng Poh (NUS: National University of Singapore)H-Index: 26
view all 3 authors...
Abstract This paper proposes a novel approach to managing capacity planning flexibility in engineering systems based on decision rules and differential evolution (DE) algorithm. A multi-stage capacity expansion problem is formalized based on a decision rule representation. The formalized model can analyze multiple sources of uncertainty simultaneously (e.g., changes in demand and material price) and explicitly consider design principles like economies of scale and learning effect. An evolutionar...
1 CitationsSource
#1Victor John M. Cantor (NUS: National University of Singapore)H-Index: 1
#2Kim-Leng Poh (NUS: National University of Singapore)H-Index: 26
Data Envelopment Analysis (DEA) has been used as a performance measurement tool in efficiency assessment of healthcare systems. However, over the years, researchers and health practitioners presented the theoretical and methodological limitations of DEA that limits the full view of healthcare efficiency. To address these limitations, a commonly used strategy is to integrate other statistical methods and techniques with DEA to provide better efficiency evaluation. This paper reviews 57 studies wi...
6 CitationsSource
Source
#1Junfei Hu (NPU: Northwestern Polytechnical University)H-Index: 4
#2Peng Guo (NPU: Northwestern Polytechnical University)H-Index: 3
Last.Linbo Luo (Xidian University)
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A flexible capacity expansion strategy is important for engineering systems since it enables decision-makers to adjust the capacity of systems as uncertainty unfolds. In a flexible capacity expansion problem, how to generate the optimal decision rule to determine when and how to expand the capacity is a challenging task. In this paper, a parameter optimization framework is proposed to automatically generate decision rules for flexible capacity expansion. The proposed framework provides a systema...
Source
#1Peng Zhou (NUAA: Nanjing University of Aeronautics and Astronautics)H-Index: 36
#2Kim-Leng Poh (NUS: National University of Singapore)H-Index: 26
Last.B.W. Ang (NUS: National University of Singapore)H-Index: 61
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Environmental performance measurement provides an analytical foundation for environmental policy analysis and decision making. As a popular performance evaluation tool, Data Envelopment Analysis (DEA) has been applied to construct environmental performance index in different ways, where modeling undesirable outputs and the choice/construction of efficiency measures are the main steps. This chapter gives an introductory text on applications of DEA to environmental performance measurement by descr...
7 CitationsSource
#1Xi Xi (California Institute of Technology)H-Index: 2
#2Kim-Leng Poh (NUS: National University of Singapore)H-Index: 26
In order to alleviate the risks of urban flooding and diversify Singapore’s sources of water supply, an innovative idea of underground reservoirs was proposed. This infrastructure could have significant long-term impacts on the water resources system in Singapore. In addition, among various alternatives to augment water supply, decision makers need to know which ones are the more sustainable plans to pursue. This research proposes a novel integrated decision support tool that synergizes System D...
14 CitationsSource
#1Qingwei Wang (NUS: National University of Singapore)H-Index: 1
#2Kim-Leng Poh (NUS: National University of Singapore)H-Index: 26
The 1995 survey on DA (decision analysis) in energy and environmental modeling by Huang et al. [1] listed 95 publications; later Zhou et al. [2] updated the survey with 252 publications by classifying the studies according to source of publications, DA method, application area, and several new attributes. As multiple criteria decision-making is a specific perspective to deal with decision problems in energy-related environmental studies with the rapid changes and the increasing complexity of the...
23 CitationsSource
#1Chunhui Zhou (NUS: National University of Singapore)
#2Kim-Leng Poh (NUS: National University of Singapore)H-Index: 26
The authors develop a network interdiction based model LRVD to quantitatively solve a supply chain risk management problem. Specifically, they considered the supply chain system as a directed graph and defined different functional components in the system as nodes and arcs, and developed a tri-level program to identify the optimal arcs to protect, given that the system is vulnerable to intentional attacks from competitors and dissatisfied labors. The authors propose a mixed-integer linear progra...
Source
Aug 1, 2014 in CASE (Conference on Automation Science and Engineering)
#1Aldy Gunawan (Singapore Management University)H-Index: 11
#2Kien Ming Ng (NUS: National University of Singapore)H-Index: 15
Last.Hoong Chuin Lau (Singapore Management University)H-Index: 23
view all 4 authors...
This paper presents a hybrid metaheuristic for solving the Quadratic Assignment Problem (QAP). The proposed algorithm involves using the Greedy Randomized Adaptive Search Procedure (GRASP) to construct an initial solution, and then using a hybrid Simulated Annealing and Tabu Search (SA-TS) algorithm to further improve the solution. Experimental results show that the hybrid metaheuristic is able to obtain good quality solutions for QAPLIB test problems within reasonable computation time. The prop...
3 CitationsSource
#1Jun Jiang (NUS: National University of Singapore)H-Index: 2
#2Kien Ming Ng (NUS: National University of Singapore)H-Index: 15
Last.Kwong Meng Teo (NUS: National University of Singapore)H-Index: 11
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In this paper, a problem variant of the vehicle routing problem with time windows is introduced to consider vehicle routing with a heterogeneous fleet, a limited number of vehicles and time windows. A method that extends an existing tabu search procedure to solve the problem is then proposed. To evaluate the performance of the proposed method, experiments are conducted on a large set of test cases, which comprises several benchmark problems from numerous problem variants of the vehicle routing p...
40 CitationsSource
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