Abstract

In the real world, integer data plays a very important role in units; number of people working in one unit, number of industrial machines, number of teachers and students. However, many of the models in different DEA indices have been proposed for real data, and few articles have reviewed the integer data. In this paper, the efficiency of scale in units with integer data in the nature of input and output is investigated. An example of the specific behavior of units is shown in this new model compared to what was expectedKeywordsData envelopment analysisLeft returns to scaleRight returns to scaleInteger data

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