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:: Volume 5, Issue 1 (5-2014) ::
IJOR 2014, 5(1): 29-46 Back to browse issues page
An Integrated Model with Conservative Levels to Evaluate the DMUs Efficiencies for Uncertain Data
A.H. Shokouhi , H. Shahriari
K. N. Toosi University of Technology, Tehran, Iran , a.shokouhi@gmail.com
Abstract:   (11952 Views)
In traditional data envelopment analysis (DEA) the uncertainty of inputs and outputs is not considered when evaluating the performance of a unit. In other words, effects of uncertainty on optimality and feasibility of models are ignored. This paper introduces a new model for measuring the efficiency of decision making units (DMUs) having interval inputs and outputs. The proposed model is based on interval DEA (IDEA) in which the inputs and outputs are limited to be within uncertainty bounds. In this model, the inputs and outputs take fixed values for each DMU such that the sum of efficiencies is maximized. The DMUs are evaluated by the same production possibility set (PPS). The efficiency is measured based on the proposed conservatism level for each input and output. Indeed, the inputs and outputs are defined by the presented conservatism level. The proposed model is integrated measuring all the DMUs efficiencies simultaneously. These efficiency scores lie between the optimistic and pessimistic cases introduced by Despotis and Similar (2002) [11].
Keywords: Data envelopment analysis, Efficiency, Integrated model, Uncertainty, Conservatism level
Full-Text [PDF 1068 kb]   (7039 Downloads)    
Type of Study: Original | Subject: Decision Analysis and Decision Support Systems
Received: 2013/10/11 | Accepted: 2014/09/9 | Published: 2015/09/16
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Volume 5, Issue 1 (5-2014) Back to browse issues page
مجله انجمن ایرانی تحقیق در عملیات Iranian Journal of Operations Research
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