An experimental comparison of the new goal programming and the linear programming approaches in the two-group discriminant problems. - Hasan Bal; H. Hasan Örkcü; Salih Çelebioglu (Comput. Ind. Eng., 2006)

A new method based on the dispersion of weights in data envelopment analysis. - Hasan Bal; H. Hasan Örkcü; Salih Çelebioglu (Comput. Ind. Eng., 2008)

Improving the discrimination power and weights dispersion in the data envelopment analysis. - Hasan Bal; H. Hasan Örkcü; Salih Çelebioglu (Comput. Oper. Res., 2010)

Goal programming approaches for data envelopment analysis cross efficiency evaluation. - H. Hasan Örkcü; Hasan Bal (Appl. Math. Comput., 2011)

A new mathematical programming approach to multi-group classification problems. - Hasan Bal; H. Hasan Örkcü (Comput. Oper. Res., 2011)

Comparing performances of backpropagation and genetic algorithms in the data classification. - H. Hasan Örkcü; Hasan Bal (Expert Syst. Appl., 2011)

Subset selection in multiple linear regression models: A hybrid of genetic and simulated annealing algorithms. - H. Hasan Örkcü (Appl. Math. Comput., 2013)

Estimating the parameters of 3-p Weibull distribution through differential evolution. - H. Hasan Örkcü; Ertugrul Aksoy; Mustafa Isa Dogan (Appl. Math. Comput., 2015)

Estimating the parameters of 3-p Weibull distribution using particle swarm optimization: A comprehensive experimental comparison. - H. Hasan Örkcü; Volkan Soner Özsoy; Ertugrul Aksoy; Mustafa Isa Dogan (Appl. Math. Comput., 2015)

A modification of a mixed integer linear programming (MILP) model to avoid the computational complexity. - H. Hasan Örkcü; Mehmet Güray Ünsal; Hasan Bal (Ann. Oper. Res., 2015)

A neutral cross efficiency approach for basic two stage production systems. - H. Hasan Örkcü; Volkan Soner Özsoy; Mediha Örkcü; Hasan Bal (Expert Syst. Appl., 2019)

Use of the heuristic optimization in the parameter estimation of generalized gamma distribution: comparison of GA, DE, PSO and SA methods. - Volkan Soner Özsoy; Mehmet Güray Ünsal; H. Hasan Örkcü (Comput. Stat., 2020)

An optimistic-pessimistic DEA model based on game cross efficiency approach. - Mediha Örkcü; Volkan Soner Özsoy; H. Hasan Örkcü (RAIRO Oper. Res., 2020)

A minimax approach for selecting the overall and stage-level most efficient unit in two stage production processes. - Volkan Soner Özsoy; Mediha Örkcü; H. Hasan Örkcü (Ann. Oper. Res., 2021)

A simplistic approach without epsilon to choose the most efficient unit in data envelopment analysis. - Volkan Soner Özsoy; H. Hasan Örkcü; Mediha Örkcü (Expert Syst. Appl., 2021)