Alternate methods of treating factor weights in DEA

Roll, Yaakov; Golany, Boaz

doi:10.1016/0305-0483(93)90042-j

Cited by 200 publications

(80 citation statements)

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“…Thirdly, the proposed method enhances the discriminant power. This contribution may seem relatively minor, but it is worth noticing that it can generate a reasonable number of efficient DMUs and produce more realistic results in real-world applications because unconstrained weights on its inputs and outputs are usually unacceptable [41].…”

Section: Discussionmentioning

confidence: 99%

Eco-Efficiency Evaluation Considering Environmental Stringency

Lee

Park

2017

Sustainability

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This paper proposes an extended data envelopment analysis (DEA) model for deriving eco-efficiency. In order to derive eco-efficiency, the proposed model utilizes the concepts of operational efficiency and environmental efficiency. Since DEA can separately measure operational efficiency and environmental efficiency, the treatment for constructing the unified indicator is required to ultimately evaluate eco-efficiency through balancing operational and environmental concerns. To achieve this goal, we define the environmental stringency as the business condition reflecting the degree of enforcing environmental regulations across the firms or particular industries in different countries. The proposed model provides flexibility, as required by the pollution-intensity of industry, in that it allows the decision maker to evaluate DMU's (decision-making unit) eco-efficiency appropriately depending on the business environment. We present a case of agricultural production systems to help readers understand what eco-efficiency becomes when we vary the stringency conditions. Through the illustrative example, this paper presents the potential application by which different environmental stringencies can successively be incorporated in DEA.

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Section: Discussionmentioning

confidence: 99%

Eco-Efficiency Evaluation Considering Environmental Stringency

Lee

Park

2017

Sustainability

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“…In order to cope with these situations, the initial development of DEA was followed by a rapid evolution of value judgments in the assessment of efficiency followed as a natural by-product of real life applications (Allen et al, 1997). As a consequence, a great number of articles on DEA weight restrictions have appeared in the literature (Roll & Golany, 1993 The most commonly used weight restrictions are bounds on the ratios of weights. This approach has been named the assurance region method by Cooper et al (2000).…”

Section: Weight Restrictionsmentioning

confidence: 99%

Efficiency and productivity analysis of the interstate bus transportation industry in Brazil

2010

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Productivity analysis is an important policy making and managerial control tool for assessing the degree to which inputs are utilized in the process of obtaining desired outputs. Data Envelopment Analysis (DEA) is a non-parametric method based on piecewise linear frontiers estimated with the aid of mathematical programming techniques and used, in this paper, to investigate technical, scale and managerial efficiencies associated with interstate bus companies in Brazil (ISBT). Data has been obtained from the web-site of the Brazilian National Agency of Land Transportation (ANTT). Since production factors in the application are constrained by technical and operational reasons, weight restrictions were introduced into the DEA models. The analysis has shown three groups of non-efficient bus firms, with clear differences in productivity. The relative managerial efficiencies of the firms in the non-efficient groups were also computed and analyzed. Finally, an example of benchmarking a nonefficient firm with DEA is presented.Keywords: regional bus transportation; DEA; efficiency and productivity. ResumoA análise de produtividade é ferramenta importante para a tomada de decisão e para a gestão de organizações, possibilitando avaliar os efeitos dos inputs na obtenção de níveis desejados de outputs. A Análise Envoltória de Dados (DEA) é um método não paramétrico baseado em fronteiras lineares por partes ajustadas através de programação matemática e utilizada para analisar as eficiências técnica, de escala e de gestão de empresas de ônibus que operam nas ligações interestaduais no Brasil (ISBT). Os dados foram obtidos no web-site da Agência Nacional de Transportes Terrestres (ANTT). Como os fatores de produção são restritos por razões técnicas e operacionais, restrições de pesos foram introduzidas nos modelos. A análise mostrou três grupos de empresas não eficientes, com claras diferenças de produtividade. Também são calculadas as eficiências de gestão relativas a esses três grupos. Finalmente é apresentado um exemplo de benchmarking de uma empresa não eficiente através de DEA.Palavras-chave: transporte interestadual em ônibus; DEA; eficiência e produtividade.

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“…There are several ways to define that common set of weights is based on this idea. While imposing bounds for factor weights, Roll and Golany (1993) found out that the common set of weights can be defined by maximizing the average efficiency of all DMUs or maximizing the number of efficient DMUs. Kao and Hung (2005) applied a compromise solution approach to minimize the total squared distances between the optimal objective values (found by DEA) and the common weighted values (found by using common set of weights).…”

Section: Technical Methodologiesmentioning

confidence: 99%

Effectiveness of the Global Banking System in 2010: A Data Envelopment Analysis Approach

Ngo

Dang-Thanh

2011

CBR

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The current crisis has revealed the weaknesses of the global financial in general and its banking system in particular, and puts forward a requirement for assessing the effectiveness and stability of the banking sectors across countries.Based on available data from 64 countries over the world, the author tried to evaluate the effectiveness of the banking sectors in those countries through the view point of the data envelopment analysis approach to define how the global banking systems is under the effect of the current crisis. Findings from the research showed that banking systems in advanced economies are still more effective than in developing countries. Moreover, it explained the effect of the current financial crisis, the role of public finance (and the government), and the development of the (privately) commercial banks to the effectiveness of the banking sectors. The research also explained some determinants that can affect the effectiveness of the banking system, including inflation, bank concentration, and level of economic development.

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Alternate methods of treating factor weights in DEA

Cited by 200 publications

References 10 publications

Eco-Efficiency Evaluation Considering Environmental Stringency

Eco-Efficiency Evaluation Considering Environmental Stringency

Efficiency and productivity analysis of the interstate bus transportation industry in Brazil

Effectiveness of the Global Banking System in 2010: A Data Envelopment Analysis Approach

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