Return-To-Scale (RTS) is a most important topic in DEA. Many methods are not obtained for estimating RTS in DEA, yet. In this paper has developed the Banker-Trall approach to identify situation for RTS for the BCC model "multiplier form" with virtual weight restrictions that are imposed to model by DM judgments. Imposing weight restrictions to DEA models often has created problem of infeasibili...

It has often been argued that the results of efficiency analyses in health care are influenced by the modelling choices made by the researchers involved. In this paper we use meta-regression analysis in an attempt to quantify the degree to which modelling factors influence efficiency estimates. The data set is derived from 253 estimated models reported in 95 empirical analyses of hospital effic...

Indicators system of China’s computer manufacturing enterprises of listed companies in Shanghai and Shenzhen can be established to reflect the efficiency of production, which accord to the number of employees, fixed assets and other economic data. Integrated data envelopment analysis (DEA) models are used, combining with evaluation and statistical tests of Synthetic Average method, Borda method...

This study discusses the assessment of OE (operational efficiency) and RTS (returns to scale) over a time horizon. Many previous DEA (Data Envelopment Analysis) studies have discussed how measure OE/RTS. However, their works did not consider measurement time. The important feature proposed approach is that our models are different from standard ones in terms factor (inputs outputs) unification....

the purpose of this article is the measurement of technical efficiency and returns to scale using data envelopment (dea) approach. in this study, we have measured efficiency quantity and economies of scale for state owned insurance and private companies for 1384-1385 periods. the results reveal that in the dea with the assumption of variable returns to scale, iran, tosee and razi companies have...

Two alternative estimation models, i.e., a translog cost function and data envelopment analysis (DEA) based on a cost model are compared and contrasted in revealing scale economies in the Indian commercial banking sector. The empirical results indicate that while the translog cost model exhibits increasing returns to scale for all the ownership groups, the DEA model reveals economies of scale o...

Currently, there are some methods of preparing data for validating an IT value model correctly. One challenge in applying mining to validate values is convert into appropriate form this activity. Data algorithms can then be applied using the prepared data. The adequacy preparation often determines whether successful or not. This study aims at creating a method during validation. basic used Retu...