K-harmonic means data clustering with simulated annealing heuristic. - Zülal Güngör; Alper Ünler (Appl. Math. Comput., 2007)

Applying K-harmonic means clustering to the part-machine classification problem. - Alper Ünler; Zülal Güngör (Expert Syst. Appl., 2009)

A discrete particle swarm optimization method for feature selection in binary classification problems. - Alper Ünler; Alper Ekrem Murat (Eur. J. Oper. Res., 2010)

mr2PSO: A maximum relevance minimum redundancy feature selection method based on swarm intelligence for support vector machine classification. - Alper Ünler; Alper Ekrem Murat; Ratna Babu Chinnam (Inf. Sci., 2011)