We highlight differences in the way multiplicative DEA is being applied and draw attention to the fact that a units …-invariant (i.e. scale-invariant) form is available. Moreover, this model avoids the ‘zero weight problem' in DEA (where criteria …

This paper proposes a set of alternative DEA-based money indices that are proved to be both theoretically and … concerning causality, forecasting and money demand, we conclude that DEA money aggregates prove to be at least competing … DEA models where the optimal weight assigned by DEA to each monetary asset reflects the ongoing financial innovation …

, for example, be price uncertainty if we use input and/or output prices for the aggregation. We show that the implications … water companies. We find that uncertainty in the regulator’s aggregation scheme does not, on average, influence the …