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The objective of this paper is to address a typical eco-efficiency analysis problem, in which undesirable outputs and categorical variables should be considered simultaneously. By analyzing the impacts of categorical variables on decision making units' (DMU) desirable and undesirable outputs, a modified DEA (Data Envelopment Analysis) model is proposed. In the proposed model, a new approach of defining...
Data envelopment analysis (DEA) was for the first time put forward by A. Charnes, W.W. Cooper and E.Rhodes, the celebrated operation researchers, in 1978. With requirements for a very small quantity of indexes, easy researching methods and highly reliable results, DEA has been becoming more and more popular among experts from the fields of health economy and hospital administration. This paper is...
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