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Sequential data envelopment analysis
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DOI：10.1007/s10479-020-03924-x.png)
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Abstract
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We consider a new class of Data Envelopment Analysis (DEA) modeling, which we call 'sequential DEA'. This new approach is a relatively simple generalization of the standard and popular in practice DEA. It allows for analyzing efficiency of the decision making units that consist of a sequence of sub-DMUs (e.g., branches of banks, hospital holding company running a number of hospitals at different locations, hotel chains, etc.). The approach is embedded in the Hilbert sequence space (l(2)) and therefore it allows for potentially different numbers of the sub-DMUs as well as different numbers of inputs and outputs used by different decision making units. We hope this approach will open up a new stream of literature in the sense that many existing variations from the already rich literature on DEA can be adapted to this approach.
Keywords:
Data envelopment analysis
Efficiency
Hilbert sequence space
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