Note---A Note on Including Ordinal Relations Among Multipliers in Data Envelopment Analysis

Data Envelopment Analysis (DEA) evaluates the efficiency of Decision Making Units without imposing a priori weights on the input and output dimensions involved. This Note extends DEA to situations where ordinal relations among weights corresponding to certain dimensions exist. The extended model is reduced to the original DEA formulation where some of the input and output factors are accumulated. An illustrative example is provided and potential areas of applications are pointed out.