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For measuring technical efficiency relative to a log-linear technology, a generalized multiplicative directional distance function (GMDDF) is developed using the framework of multiplicative directional distance function (MDDF). Furthermore, a computational procedure is suggested for its...
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Estimation of efficiency of firms in a non-competitive market characterized by heterogeneous inputs and outputs along with their varying prices is questionable when factor-based technology sets are used in data envelopment analysis (DEA). In this scenario, a value-based technology becomes an...
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In data envelopment analysis (DEA), any set of observed decision making units (DMUs) that produces a projection point of an inefficient DMU is called a reference set of this DMU. Based on this definition, however, the concept of reference set is not mathematically well defined in the non-radial...
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