Evaluating Cost Efficiency in Fuzzy Environment by Using Expected Value
Publish place: 2nd National Conference on Indurtrial Engineering & Systems
Publish Year: 1392
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NIESC02_190
تاریخ نمایه سازی: 27 اردیبهشت 1393
Abstract:
Today, one of the most fundamental issues within the field of industrial and nonindustrial activities is evaluate the costs performance of the sectors which are associated with industrial and nonindustrial activities. Data envelopment analysis (DEA) is a nonparametric method for evaluating performance. Fuzzy sets theory is a powerful tool for mentioning ambiguous situations. Traditional DEA models cannot work with fuzzy data therefor there is a need for a method which can evaluate this type of activities. Yet, in fuzzy data envelopment analysis, there isn’t a powerful method which can evaluate cost efficiency in fuzzy environment. In this paper, new methods for obtaining cost efficiency measurement with data set of fuzzy numbers in various conditions (variable return to scale and constant return to scale) are considered. These consist of situations where prices are fuzzy and unknown exactly at each decision making unit (DMU). All offered methods are applied in an assessment project and results are mentioned
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Authors
Mohsen Hekmatnia
Department of Mathematics, Zahedan Branch, Islamic Azad University, Zahedan, Iran
Ali Payan
Department of Mathematics, Zahedan Branch, Islamic Azad University, Zahedan, Iran
Mehdi Allahdadi
College of Mathematics, University of Sistan and Baluchestan, Zahedan, Iran
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