Publications

• Public

  A class of diagonal preconditioners for limited memory BFGS method Apr-2013

  DOI: 10.1080/10556788.2011.653356
  Leong, W & Chen, C, 2013, 'A class of diagonal preconditioners for limited memory BFGS method', Optimization Methods and Software, vol. 6, no. 2, pp. 11-392.
• Public

  On the performance of a new symmetric rank-one method with restart for solving unconstrained optimization problems Sep-2012

  DOI: 10.1016/j.camwa.2012.06.017
  Modarres Khiyabani, F & Leong, W, 2012, 'On the performance of a new symmetric rank-one method with restart for solving unconstrained optimization problems', Computers & Mathematics with Applications, vol. 91, no. 2, pp. 201-2152.
• Public

  A new class of nonlinear conjugate gradient coefficients with global convergence properties July-2012

  DOI: 10.1016/j.amc.2012.05.030
  Rivaie, M, Mamat, M, June, L & Mohd, I, 2012, 'A new class of nonlinear conjugate gradient coefficients with global convergence properties', Applied Mathematics and Computation, vol. 179, no. 6, pp. 407-11332.
• Public

  A Genetic Algorithm with Fuzzy Crossover Operator and Probability 2012

  DOI: 10.1155/2012/956498
  Jalali Varnamkhasti, M, Lee, L, Abu Bakar, M & Leong, W, 2012, 'A Genetic Algorithm with Fuzzy Crossover Operator and Probability', Advances in Operations Research, vol. 23, no. 1, pp. 85-16.
• Public

  Accumulative Approach in Multistep Diagonal Gradient-Type Method for Large-Scale Unconstrained Optimization 2012

  DOI: 10.1155/2012/875494
  Farid, M, June Leong, W & Zheng, L, 2012, 'Accumulative Approach in Multistep Diagonal Gradient-Type Method for Large-Scale Unconstrained Optimization', Journal of Applied Mathematics, vol. 10, no. 1, pp. 147-11.
• Public

  A matrix-free quasi-Newton method for solving large-scale nonlinear systems Sep-2011

  DOI: 10.1016/j.camwa.2011.07.023
  Leong, W, Hassan, M & Yusuf, M, 2011, 'A matrix-free quasi-Newton method for solving large-scale nonlinear systems', Computers & Mathematics with Applications, vol. 81, no. 5, pp. 569-2363.
• Public

  Scaled memoryless symmetric rank one method for large-scale optimization Sep-2011

  DOI: 10.1016/j.amc.2011.05.080
  Leong, W & Hassan, M, 2011, 'Scaled memoryless symmetric rank one method for large-scale optimization', Applied Mathematics and Computation, vol. 19, no. 2, pp. 815-418.
• Public

  Meeting the Desired Project Completion Time by Stretching Critical Activities Aug-2011

  DOI: 10.3923/tasr.2011.832.847
  Khalaf, W, June, L & Abu Bakar, M, 2011, 'Meeting the Desired Project Completion Time by Stretching Critical Activities', Trends in Applied Sciences Research, vol. 6, no. 8, pp. 832-847.
• Public

  Structured symmetric rank-one method for unconstrained optimization Aug-2011

  DOI: 10.1080/00207160.2011.553220
  Modarres, F, Hassan, M & Leong, W, 2011, 'Structured symmetric rank-one method for unconstrained optimization', International Journal of Computer Mathematics, vol. 39, no. 12, pp. 541-2617.
• Public

  A symmetric rank-one method based on extra updating techniques for unconstrained optimization July-2011

  DOI: 10.1016/j.camwa.2011.05.022
  Modarres, F, Hassan, M & Leong, W, 2011, 'A symmetric rank-one method based on extra updating techniques for unconstrained optimization', Computers & Mathematics with Applications, vol. 91, no. 2, pp. 201-400.
• Public

  A Comparative Study on Time-cost Trade-off Approaches within Critical Path Method Jun-2011

  DOI: 10.3923/jas.2011.920.931
  Khalaf, W, Wah June, L, Abu Bakar, M & Lai Soon, L, 2011, 'A Comparative Study on Time-cost Trade-off Approaches within Critical Path Method', Journal of Applied Sciences, vol. 11, no. 6, pp. 920-931.
• Public

  An improved multi-step gradient-type method for large scale optimization Jun-2011

  DOI: 10.1016/j.camwa.2011.04.030
  Farid, M & Leong, W, 2011, 'An improved multi-step gradient-type method for large scale optimization', Computers & Mathematics with Applications, vol. 23, no. 2, pp. 373-3318.
• Public

  A new gradient method via least change secant update Mar-2011

  DOI: 10.1080/00207161003770386
  Leong, W & Hassan, M, 2011, 'A new gradient method via least change secant update', International Journal of Computer Mathematics, vol. 24, no. 4, pp. 149-828.
• Public

  Improved Hessian approximation with modified secant equations for symmetric rank-one method Feb-2011

  DOI: 10.1016/j.cam.2010.10.042
  Modarres, F, Malik, A & Leong, W, 2011, 'Improved Hessian approximation with modified secant equations for symmetric rank-one method', Journal of Computational and Applied Mathematics, vol. 91, no. 2, pp. 201-2431.
• Public

  New quasi-Newton methods via higher order tensor models Feb-2011

  DOI: 10.1016/j.cam.2010.10.041
  Biglari, F, Hassan, M & Leong, W, 2011, 'New quasi-Newton methods via higher order tensor models', Journal of Computational and Applied Mathematics, vol. 124, no. 2, pp. 97-2422.
• Public

  A Low Memory Solver for Integral Equations of Chandrasekhar Type in the Radiative Transfer Problems 2011

  DOI: 10.1155/2011/467017
  Yusuf Waziri, M, Leong, W, Abu Hassan, M & Monsi, M, 2011, 'A Low Memory Solver for Integral Equations of Chandrasekhar Type in the Radiative Transfer Problems', Mathematical Problems in Engineering, vol. 16, pp. 237-12.
• Public

  A new two-step gradient-type method for large-scale unconstrained optimization May-2010

  DOI: 10.1016/j.camwa.2010.03.014
  Farid, M, Leong, W & Hassan, M, 2010, 'A new two-step gradient-type method for large-scale unconstrained optimization', Computers & Mathematics with Applications, vol. 23, no. 2, pp. 373-3307.
• Public

  A new gradient method via quasi-Cauchy relation which guarantees descent Aug-2009

  DOI: 10.1016/j.cam.2008.11.013
  Hassan, M, Leong, W & Farid, M, 2009, 'A new gradient method via quasi-Cauchy relation which guarantees descent', Journal of Computational and Applied Mathematics, vol. 10, no. 1, pp. 147-305.
• Public

  A restarting approach for the symmetric rank one update for unconstrained optimization

  DOI: 10.1007/s10589-007-9115-z
  Leong, W & Hassan, M, 2009, 'A restarting approach for the symmetric rank one update for unconstrained optimization', Computational Optimization and Applications, vol. 19, no. 4, pp. 815-334.

Grants

Patents