Efficiency and Cross-Efficiency in DEA: Derivations, Meanings and Uses

Doyle, John; Green, Rodney

doi:10.2307/2584392

Cited by 61 publications

(88 citation statements)

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“…One of such methodologies is based on the notion of cross-efficiency -the efficiency indicator calculated for each unit using the optimal weights of other units (Doyle and Green, 1994;Ramón et al, 2011). Another utilises the concept of super-efficiency -a measure of influence of an efficient DMU on the shape of the efficient frontier in its neighbourhood (Andersen and Petersen, 1993).…”

Section: Proposed Methodologymentioning

confidence: 99%

Using data envelopment analysis for the assessment of technical efficiency of units with different specialisations: An application to agriculture

Atıcı

Podinovski

2015

Omega

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Citation: ATICI, K.B. and PODINOVSKI, V.V., 2015. Using data envelopment analysis for the assessment of technical efficiency of units with different specialisations: an application to agriculture. Omega, 54, Additional Information:• This paper was accepted for publication in the journal AbstractIn this paper we consider the use of data envelopment analysis (DEA) for the assessment of efficiency of units whose output profiles exhibit specialisation. An example of this is found in agriculture where a large number of different crops may be produced in a particular region, but only a few farms actually produce each particular crop. Because of the large number of outputs, the use of conventional DEA models in such applications results in a poor efficiency discrimination. We overcome this problem by specifying production trade-offs between different outputs, relying on the methodology of Podinovski (2004). The main idea of our approach is to relate various outputs to the production of the main output. We illustrate this methodology by an application of DEA involving agricultural farms in different regions ofTurkey. An integral part of this application is the elicitation of expert judgements in order to formulate the required production trade-offs. Their use in DEA models results in a significant improvement of the efficiency discrimination. The proposed methodology should also be of interest to other applications of DEA where units may exhibit specialization, such as applications involving hospitals or bank branches.

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Section: Proposed Methodologymentioning

confidence: 99%

Using data envelopment analysis for the assessment of technical efficiency of units with different specialisations: An application to agriculture

Atıcı

Podinovski

2015

Omega

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“…The relative efficiency for CRS model may be expressed as follows [33,34]: where E ks is the efficiency of source s, using the weights of ''test'' source k, where the test EP is the unit whose efficiency is to be evaluated; O sy is the value of output y for source s; v ky is the weight assigned to source k for output y; I sx is the value for input x of source s; and u kx is the weight assigned to source k for input x.…”

Section: Study Methodologymentioning

confidence: 99%

An explorative study to enable environmentally conscious manufacturing for an industrial gearbox manufacturing organization

2014

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-In recent years, environmentally conscious manufacturing (ECM) has become an important aspect and proactive approach for majority of the manufacturing organizations in India. The reason is that ECM not only helps to produce environment friendly, but also helps to make money by reducing cost or achieving competitive advantage. Industrial gearbox manufacturing organizations have significant environmental impacts as industrial gearbox manufacturing involves several steps which use valuable resources and pollute the environment. Hence, this paper presents an explorative environmental study of an Indian industrial gearbox manufacturing organization. The objective of the current paper is (i) to identify the environmental problems and environmentally conscious manufacturing indicators (ECMI), (ii) to find out the root causes of these problems and (iii) to solve the root causes based on the available stateof-the-art literature. This research work not only reviews the efficient environment friendly manufacturing techniques, but also helps the organization to become eco-efficient by producing environment friendly while making money. First ECMIs selected from literature review, are validated through process mapping. Then these indicators are prioritized using analytic hierarchy process (AHP) to find out the critical environmentally conscious manufacturing indicators (CECMI). The sources of CECMIs are identified using either data envelopment analysis (DEA) or direct observation of the available database. Finally, some possible solutions are also addressed in this paper.

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“…Se um modelo é orientado a inputs, significa que as DMUs tentarão atingir a fronteira realizando uma diminuição de seus recursos, sem que seus resultados Uma das formas de aumentar a discriminação entre as DMUs nos modelos DEA é a utilização da fronteira invertida, que é uma avaliação pessimista das DMUs. Sua utilização ocorre devido à simplicidade de utilização, diferentemente de outras técnicas conhecidas em DEA como Cross Evaluation (ou avaliação cruzada) (Doyle e Green, 1994;Sexton et al, 1986) e MCDEA (X.-B. Li e Reeves, 1999), permitindo contornar a tendência de DEA em atribuir vários pesos nulos.…”

Section: Análise Envoltória De Dados Em Processos Licitatóriosunclassified

Avaliação de processos licitatórios de embarcações de apoio marítimo offshore com utilização de análise envoltória de dados

et al. 2014

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O trabalho apresenta uma proposta de utilização da Análise Envoltória de Dados (DEA) em processos licitatórios para contratação de embarcações tipo PSV (Platform Supply Vessel) de apoio marítimo pela Petrobras. A relevância do trabalho está em considerar as variáveis econômicas e técnicas envolvidas no processo, em alternativa ao processo atual de contratação, que considera apenas o menor preço. A escolha da proposta de menor preço pode gerar custos extras ao longo do tempo, pois não considera aspectos técnicos na avaliação das propostas concorrentes. Utiliza-se o modelo DEA CCR para análise das propostas concorrentes com o uso complementar da fronteira invertida para o cálculo da eficiência. A vantagem desta proposta é que são considerados os aspectos econômicos e técnicos sem qualquer interferência do decisor. Os resultados mostram que a melhor proposta é a embarcação HW, única com eficiência máxima, seguida da embarcação LT. É feita ainda uma comparação dos resultados obtidos pelo modelo DEA proposto com um processo licitatório real.

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Efficiency and Cross-Efficiency in DEA: Derivations, Meanings and Uses

Cited by 61 publications

References 0 publications

Using data envelopment analysis for the assessment of technical efficiency of units with different specialisations: An application to agriculture

Using data envelopment analysis for the assessment of technical efficiency of units with different specialisations: An application to agriculture

An explorative study to enable environmentally conscious manufacturing for an industrial gearbox manufacturing organization

Avaliação de processos licitatórios de embarcações de apoio marítimo offshore com utilização de análise envoltória de dados

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