Copula approach to select input/output variables for DEA

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dc.contributor.authorAlpay, Olcay
dc.contributor.authorAkturk, Elvan Hayat
dc.date.accessioned2020-01-20T19:00:38Z
dc.date.available2020-01-20T19:00:38Z
dc.date.issued2017
dc.departmentSinop Üniversitesi
dc.description.abstractDetermination of the input/output variables is an important issue in Data Envelopment Analysis (DEA). Researchers often refer to expert opinions in defining these variables. The purpose of this paper is to propose a new approach to determine the input/output variables, it is important to keep in mind that especially when there is no any priori information about variable selection. This new proposed techniqueis based on a theoretical method which is called "Copula". Copula functions are used for modeling the dependency structure of the variables with each other. Also we use the local dependence function which analyzes the point dependency of variables of copulas to define the input/output variables. To illustrate the usefulness of the proposed approach, we conduct two applications using simulated and real data and compare the efficiencies in DEA. Our results show that new approach gives values close to perfection
dc.identifier.endpage33en_US
dc.identifier.issn2146-0957
dc.identifier.issn2146-5703
dc.identifier.issue1en_US
dc.identifier.startpage28en_US
dc.identifier.trdizinid220657
dc.identifier.urihttp://www.trdizin.gov.tr/publication/paper/detail/TWpJd05qVTNOdz09
dc.identifier.urihttps://hdl.handle.net/11486/1686
dc.identifier.volume7en_US
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.relation.ispartofAn International Journal of Optimization and Control: Theories & Applications (IJOCTA)
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.subjectİstatistik ve Olasılık
dc.subjectMatematik
dc.titleCopula approach to select input/output variables for DEA
dc.typeArticle

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