Generalized Efficiency Measures (GEMS) for use in DEA are developed and analyzed in a context of differing models where they might be employed. The additive model of DEA is accorded a central role and developed in association with a new measure of efficiency referred to as RAM (Range Adjusted...

We show with using of illustrative example the functioning of the double-stage method for assessing eco-efficiency of firms, which produce not only a desired output, but also an undesirable output. This method is based on the traditional DEA model, namely the additive DEA models, which use the...

Data Envelopment Analysis (DEA) is a decision making tool based on linear programming for measuring the relative efficiency of a set of comparable units. Besides the identification of relatively efficient and inefficient units, DEA identifies the sources and level of inefficiency for each of the...

Data Envelopment Analysis (DEA) is a decision making tool based on linear programming for measuring the relative efficiency of a set of comparable units. Besides the identification of relatively efficient and inefficient units, DEA identifies the sources and level of inefficiency for each of the...

The Middle European Economics have been being very successful for long time. It is time to "ex post" evaluation of the Investment Incentives policy that has been broadly used. Linear Mathematical Programming is able to distinguish which of examined units are efficient and which are not. In this...

DEA (Data Envelopment Analysis) models are usually used to find the relative efficiency among homogenous units according to selected criteria (inputs and outputs). Homogenous units are the units (companies, institutions, states) that produce equivalent outputs via using the same inputs but with...

The evaluation of the efficiency of investments relies on a system of measures based on actuarial techniques that consider the time value of money. One of the common measures used is the Internal Rate of Return (IRR). Commonly, by applying of the efficiency evaluation criteria, result consistent...

Research on productive efficiency at the firm level has developed as an important and active strand of research the last decades, both within operations research, management science and economics. However, the interests pursued within the fields have had some differences regarding sound...

The study concentrates on the comparison of hedge fund efficiency measured by maximum drawdown measures with traditional risk/return ratios. The examined period is from 1990 to 2011 and the data were provided by Hedge Fund Research. It is a continuation of the research done for a shorter period,...