Prof. Lai Soon Lee

Department of Mathematics and Statistics

Universiti Putra Malaysia, Malaysia

Email: lls@upm.edu.my

Qualifications

2006 Ph.D., University of Southampton, UK, Operational Research

2000 M.A., Universiti Putra Malaysia, Malaysia, Applied Mathematics (Numerical Analysis)

1999 B.A., Universiti Putra Malaysia, Malaysia, Mathematics

Publications (Selected)

1. Lee Lai Soon. 2008. A Genetic Algorithm for Two-Dimensional Bin Packing Problem. MathDigest Research Bulletin of Institute for Mathematical Research, 2(1): 34 -39.
2. L.Wong and L.S. Lee. 2009. Heuristic Placement Routines for Two-Dimensional Bin Packing Problem. Journal of Mathematics and Statistic, 5(4): 334 – 341. (Scopus)
3. H. Nazif and L.S. Lee. 2009. A Genetic Algorithm on Single Machine Scheduling Problem to Minimise Total Weighted Completion Time. European Journal of Scientific Research. 35(3): 444 – 452. (Scopus)
4. H. Nazif and L.S. Lee. 2010. Optimised Crossover Genetic Algorithm for Vehicle Routing Problem with Time Windows. American Journal of Applied Sciences. 7(1): 95 – 101. (Scopus)
5. M. Sarabian and L.S. Lee. 2010. A Modified Partially Mapped MultiCrossover Genetic Algorithm for Two-Dimensional Bin Packing Problem. Journal of Mathematics and Statistics. 6(2): 157 – 162. (Scopus)
6. H. Nazif and L.S. Lee. 2010. Solving Single Machine Scheduling Problem with Maximum Lateness using a Genetic Algorithm. Journal of Mathematics Research. 2(3): 57 – 62.
7. Ehsanollah Mansourirad, Mohd Rizam Abu Bakar, Azmi Jaafar and Lai Soon Lee. 2010. Interval Efficiency Scores using a new method in Fuzzy Data Envelopment Analysis. Advances in Fuzzy Sets and Systems. 6(1): 1 – 12.
8. Ehsanollah Mansourirad, Mohd Rizam Abu Bakar, Lai Soon Lee and Azmi Jaafar. 2010. Fuzzy Weights in Data Envelopment Analysis. International Mathematical Forum. 5(38): 1871 – 1886.
9. W.S. Khalaf, W.J. Leong, M.R. Abu Bakar, and L.S. Lee. 2010. A Linear Programming Approach to Maximize Saving by Stretching Noncritical Activities. Australian Journal of Basic and Applied Sciences. 4(11): 5649 – 5657. (Scopus)
10. Mohammad Jalali Varnamkhasti and Lai Soon LEE. 2010. Fuzzy Sexual Selection and Multi-Crossover for Genetic Algorithm. International Journal of Vocational and Technical Education. 2(4): 62–66.
11. W.S. Khalaf, W.J. Leong, M.R. Abu Bakar, and L.S. Lee. 2011. A Comparative Study on Time-Cost Tradeoff Approaches within Critical Path Method. Journal of Applied Sciences. 11(6): 920 – 931. (Scopus)
12. Ali Ashrafi, Azmi Bin Jaafar, Lai Soon Lee, and Mohd Rizam Abu Bakar. 2011. An Enhanced Russell Measure of Super-Efficiency for Ranking Efficient Units in Data Envelopment Analysis. American Journal of Applied Sciences. 8(1): 92-96. (Scopus)
13. A. Ashrafi, A.B. Jaafar, L.S. Lee, and M.R. Abu Bakar. 2011. A Slack-Based Measure of Efficiency in Two-Stage Data Envelopment Analysis. International Journal of Mathematical Analysis. 5(29): 1435 – 1444. (Scopus)
14. Ali Ashrafi, Azmi Bin Jaafar, Mohd Rizam Abu Bakar, and Lai Soon Lee. 2011. The Efficiency Measurement of Parallel Production Systems: A Non-Radial Data Envelopment Analysis Model. Journal of Computer Science. 7(5): 749 – 756. (Scopus)
15. A. Ashrafi, A.B. Jaafar, L.S. Lee, and M.R. Abu Bakar. 2011. Efficiency Decomposition for Two-Process Production Systems with Shared Inputs in Data Envelopment Analysis. Applied Mathematical Sciences 5(52): 2593–2602. (Scopus)
16. Mohammad Jalali Varnamkhasti, Lai Soon Lee, Mohd Rizam Abu Bakar, and Wah June Leong. 2012. A Genetic Algorithm with Fuzzy Crossover Operator and Probability. Advances in Operations Research. Volume 2012, Article ID 956498, 16 pages. (Scopus)
17. H. Nazif and L.S. Lee. 2012. Optimised Crossover Genetic Algorithm for Capacitated Vehicle Routing Problem. Applied Mathematical Modelling. 36(5): 2110–2117. (JCR 2010 – Q1)
18. C.N. Yap, L.S. Lee, Z.A. Majid, and H.V. Seow. 2012. Ant Colony Optimization for Container Loading Problem. Journal of Mathematics and Statistics. 8(2): 165 – 175. (Scopus)
19. W.F. Tan, L.S. Lee, Z.A. Majid, and H.V. Seow. 2012. Ant Colony Optimization for Capacitated Vehicle Routing Problem. Journal of Computer Science. 8(6): 846 – 852. (Scopus)
20. Mohammad Jalali Varnamkhasti, Lai Soon Lee. 2012. A Fuzzy Genetic Algorithm Based on Binary Encoding for Solving Multidimensional Knapsack Problems. Journal of Applied Mathematics. Volume 2012, Article ID 703601, 23 pages. (JCR 2010 – Q3)
21. Habibeh Nazif and Lee Lai Soon. 2012. Optimised Crossover Genetic Algorithm to Minimise the Maximum Lateness of Single Machine Family Scheduling Problems. Journal of Asian Scientific Research. 2(5): 240 – 253. (Scopus)
22. Ali Ashrafi, Azmi B Jaafar, and Lai Soon Lee. 2012. An Enhanced Russell Measure of Efficiency in the Presence of Non-Discretionary Factors in Data Envelopment Analysis. Proceedings of the Romanian Academy, Series A – Mathematics, Physics, Technical Sciences, Information Science. 13(2): 91 – 96. (Scopus)
23. Ali Arab, Napsiah Ismail, and Lai-Soon Lee. 2013. Maintenance Scheduling Incorporating Dynamics of Production System and Online Information from Workstations. Journal of Intelligent Manufacturing. 24(4): 695 – 705. (JCR 2011 – Q3)
24. Julia A. Bennell, Lai Soon Lee, and Chris N. Potts. 2013. A Genetic Algorithm for Two-Dimensional Bin Packing with Due Dates. International Journal of Production Economics. 145(2): 547-560. (JCR 2011 – Q1)
25. Ali Ashrafi, Hsin-Vonn Seow, Lai Soon Lee, Chew Ging Lee. 2013. The Efficiency of the Hotel Industry in Singapore. Tourism Management. 37: 31-34. (JCR 2011 – Q1)
26. J.S.C. Chew, L.S. Lee, and H.V. Seow. 2013. Genetic Algorithm for Bi-Objective Urban Transit Routing Problem. Journal of Applied Mathematics. Volume 2013, Article ID 698645, 15 pages. (JCR 2011 – Q3)
27. A. Mirsalehy, M. R. Abu Bakar, G. R. Jahanshahloo, F. Hosseinzadeh Lotfi, and L. S. Lee. 2014. Centralized Resource Allocation for Connecting Radial and Nonradial Models. Journal of Applied Mathematics. Volume 2014, Article ID 974075, 12 pages. (JCR 2012 – Q2)
28. Ali Mirsalehy, Mohd Rizam Abu Bakar, Lai Soon Lee, Azmi Jaafar and Maryam Heydar. 2014. Directional Slack-Based Measure for the Inverse Data Envelopment Analysis. The Scientific World Journal. Volume 2014, Article ID 138923, 9 pages. (Scopus)
29. Bayda Atiya Kalaf, Mohd Rizam Abu Bakar, Lee Lai Soon, Mansor Monsi, Abdul Jabbar Khudhur Bakheet, and Iraq Tereq Abbas. 2015. A Modified Fuzzy Multi-Objective Linear Programming to Solve Aggregate Production Planning. International Journal of Pure and Applied Mathematics. 104(3): 339 – 352. (Scopus)
30. A. Mirsalehy, M. Rizam Abu Bakar, L. S. Lee, and Gh. R. Jahanshahloo. 2016. The Directional Hybrid Measure of efficiency in Data Envelopment Analysis. Journal of Linear and Topological Algebra. 5(3): 155 – 174.
31. I. Rahimi, M. T. Askari, S. H. Tang, L. S. Lee, S. Azfanizam Ahmad, and Adel M. Sharaf. 2016. Development model for supply chain network design by demand uncertainty and mode selection. International Journal of Applied Operational Research. 6(1): 51 – 64.
32. S. Ishak, L.S. Lee, G. Ibragimov. 2016. Hybrid Genetic Algorithm for University Examination Timetabling Problem. Malaysian Journal of Mathematical Sciences. 10(2): 145 – 178. (Scopus)
33. Lai Soon LEE, Hsin Vonn SEOW, Siti Nur’azhiimah ABD HALIM, Anwar FITRIANTO, and Mahendran SHITAN. 2016. Show or No Show: Modelling for the Inventory Management of an Alirline Industry in Malaysia. Journal of Global Economics, Management and Business Research. 7(3): 171 – 181.
34. Mohd Rizam Abu Bakar, Abdul Jabbar Khudhur Bakheet, Rafah Kamil, Badya Atiya Kalaf, Iraq T. Abbas, and Lee Lai Soon. 2016. Enhanced Simulated Annealing for Solving Aggregate Production Planning. Mathematical Problems in Engineering. Article ID: 1679315. 2016: 9 pages. (JCR 2014 – Q3)