In the case of proportional output reduction strategy with a single output, Variable-Returns-to-Scale (VRS) Zero-Sum Gains Data Envelopment Analysis (ZSG-DEA) efficiency scores can be obtained from VRS conventional DEA by means Target’s Assessment Theorem (TAT). Using TAT as departure point, two relations for computing ZSG-DEA appear in literature. Our objective this note is to compare, contras...

the measurement of rts amounts measures a relationship between inputs and outputs in a production structure. there are many different ways to calculate rts in primal or dual space. but in more realistic cases, governments usually intervene on dmu’s behavior as regulatory agency, this clearly represent a set of limitations and restrictions on behaviors of dmus, so very few decisions in dmus are ...

In this paper a two-stage Data Envelopment Approach (DEA) is used to assess the relative efficiency of container shipping agents operating in Spanish ports, studying also its influencing factors. In the first stage, an input-oriented, Variable Returns To Scale (VRS) model is used to compute efficiency scores of the different shipping agents. The model considers labor as input and numbers of loa...

Abstract Applications of efficiency and productivity analysis in which some inputs outputs are given the form percentages, averages other types ratio measures sufficiently common literature. In two recent papers, authors developed variable constant returns-to-scale technologies with both volume outputs, referred to as R-VRS R-CRS technologies. These generally nonconvex have a complex structure....

The super-efficiency (SE) model is identical to the standard model, except that the unit under evaluation is excluded from the reference set. This model has been used in ranking efficient units, identifying outliers, sensitivity and stability analysis, measuring productivity changes, and solving two-player games. Under the assumption of variable, non-increasing and non-decreasing returns to sca...

This paper aims to compare relative efficiency of the knowledge triangle policy in 25 EU member states providing evidence on the knowledge triangle technical efficiency calculated relying on output-oriented Data Envelopment Analysis (DEA) model assuming variable returns to scale (VRS). Moreover, the knowledge triangle efficiency indices are calculated, utilising the concept of actual and target...

This paper aims at comparing results between the circular Malmquist index (CMI) and the variable returns to scale Malmquist index (VRS-MI) from an even panel data. Based on the ground theory, the study purposefully uses comparative discussion on above mentioned methods. The contribution of the paper is on applied feature of using different methods at the same data set. The results of the study ...

This study investigated the technical and scale efficiencies in rice production by rice farmers in Ebonyi State Nigeria using the data envelopment analysis (DEA). Data was collected from a sample of 180 farmers using multi-stage sampling technique. Data were analysed using descriptive statistics and Data Envelopment Analysis (DAE) approach. The result showed that majority of the rice farmers we...

the basic models of data envelopment analysis (dea) are designed in such a way that the values of input and output indicators should be identified and known in them. in other words, these models are not used to consider inaccurate, interval, fuzzy, judgment data. in this paper, the aim is to not only review the past researches about the efficiency of the units by interval data and represent the...

A supply chain is a set of suppliers, manufactures and distributors, which are linked together. The first chain is a supplier and the last one is customers. What is the most important in supply chain are highquality products by the least cost and the most benefit. In this regard, each input and output and intermediate have unit price and unit cost information. The cost-minimization and the prof...