An input-oriented radial measure for returns to scale aggregation.
محورهای موضوعی : Data Envelopment Analysisرضا کاظمی متین 1 , رزا عزیز 2 , مهدی میرجابری 3
1 - گروه ریاضی دانشگاه آزاد اسلامی واحد کرج
2 - Department of Mathematics, Islamic Azad University, Karaj Branch, Karaj, Iran
3 - Department of Mathematics, Islamic Azad University, Khorasgan Branch, Isfahan, Iran
کلید واژه: Target setting, Data Envelopment Analysis (DEA), Industry, Aggregation, Input-oriented radial measure, Returns-to-scale (RTS),
چکیده مقاله :
In production theory, it is necessary to be capable of predicting the production func- tion’s long-run behaviors. Hereof, returns to scale is a helpful concept. Returns to scale describes the reaction of a production function to the proportionally scaling all its input variables. In this regard, Data envelopment analysis (DEA) provides a com- prehensive framework for returns to scale evaluation. A sequence of attempts has been made on the subject of returns to scale in DEA literature which cause DEA to be ex- panded to widespread applications. Centralization of carried out studies in firm level, on one hand, and the importance of economical inter-operation in performance analysis in industry level, on the other hand, were the main motivation to start a new range of studies around identifying the return to scale in industry level. This paper collaborates interesting relations between firms and industry technology with performance analysis techniques to extract a relation between returns to scale status of firms and system-wide unit based on the reference set method.
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