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Abstract
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Efficiency measurement has been an essential topic in banking research.
Many studies have used the data envelopment analysis approach as an effective tool
for the efficiency measurement of bank branches. Recently, the Network (NDEA)
method has been introduced, which involves internal processes and intermediate
factors in the efficiency measurement. A few studies have used this method for the
efficiency measurement of bank branches; they have considered two processes in
branches and used two-stage models. In this study, we will use a more general
approach and a more complete network structure consisting of three processes,
including the deposit attraction process, deposit allocation process and banking
services provision process. Since we want to obtain efficient targets, an envelopment
form of the NDEA model had to be used. Therefore, a slack-based NDEA
model, as introduced by Tone and Tsutsui (SBM-NDEA), was nominated to support
its mathematical model. But according to the new categorization of the efficiency
measurement factors introduced in this paper, and also regarding some previous
reviews on SBM-NDEA model, the model will be modified to include the desired
properties. Finally, by applying the modified model, branches efficiency scores and
also efficient targets will be obtained.
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