The BCC model (1984) distinguishes between technical and scale inefficiencies by (1978) by providing for variable returns to scale (VRS). There is another type of model called the output-oriented model that attempts to maximize outputs without requiring more of any of the observed input values that is expressed as follows:īCC model Banker, Charnes and Cooper (1984) extended the earlier work of Charnes et al. This is called the input-oriented model that is expressed as follows: One version of a CCR model aims to minimize inputs while satisfying at least the given output levels. (ii) assumes constant returns to scale (CRS). ![]() ![]() (i) yields an objective evaluation of overall efficiency and Charnes, Cooper and Rhodes (1978) first proposed DEA as an evaluation tool to measure and compare the relative efficiency of DMUs.
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