An alternative 2-phase method for evaluating of DMUs using DEA

Iranian Journal of Numerical Analysis and Optimization

مقاله 4، دوره 3، شماره 1 - شماره پیاپی 3، فروردین 2013، صفحه 45-54   

نوع مقاله: Research Article

شناسه دیجیتال (DOI): 10.22067/ijnao.v3i1.18824

نویسنده

Mohammadreza Alirezaee^*

School of Mathematics, Iran University of Sciences and Technology, Tehran, Iran.

چکیده

Computationally, selection of a proper numerical value for infinitesimal non Archimedean epsilon in DEA models has some difficulties. Although there are several algorithms for selecting the proper non-Archimedean epsilon, it is important to introduce methods in order to calculate the efficiency of DMUs without using epsilon. One of these methods is a two-phase method, which obtains the efficiency of each DMU through solving two LPs, which the second LP is depended to the first. This paper proposes a method, which is able to compute the efficiency of DMUs by two LPs, which are not depended to each other and computationally can solve in a parallel computation. The major of this method is to find two references for each unit and combine them to obtain actual reference.

کلیدواژه‌ها

Data Envelopment Analysis (DEA)؛ Decision Making Units (DMUs)؛ Non-Archimedean؛ Two-phase method؛ Reference point

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