INTRODUCTION A METHOD OF DETERMINING RETURNS TO SCALE IN NETWORK DATA ENVELOPMENT ANALYSIS

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JMMF-2-2_002

تاریخ نمایه سازی: 19 بهمن 1401

Abstract:

Data Envelopment Analysis (DEA) is an effective method for measuring the efficiency of Decision Making Units (DMUs) In the process of evaluating the Decision Making Unitss, two factors of efficiency and production size can be used. When the production size of a unit is not optimal, its Returns To Scale (RTS) determines that changing the resources in another direction would enhance its productivity. In most previous research, RTS is considered to be increasing or decreasing, and frontier analysis is used to determine it. The concept of RTS in Network Data Envelopment Analysis (DEA) is so interesting.In this paper a method based on MPSS in several steps is developed, in addition to determining that RTS of units for each unit in directional manner, the shortest changes in resources for achieving the right size for network production is also obtained. In this approach, the computational complexity, and the ambiguity in units RTS is not present.

Keywords:

Data Envelopment Analysis , Network data envelopment analysis , Returns to Scale , Efficiency , Most Productive Scale Size

Authors

Hadi Bagherzadeh Valami

No ۱۷,۸th alley, varze street, West ferdos boulivard, Tehran

Zeinab Sinaei nasab

Applied mathematics, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University, Tehran, Iran