Chapter 1 Introduction: Extensions and new developments in DEA

Cooper, W. W.; Thompson, Russell G.; Thrall, Robert M.

doi:10.1007/bf02125451

Cited by 181 publications

(70 citation statements)

References 40 publications

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“…Afterwards, Cooper et al (1996) conceived another approach, which was later improved by Brockett et al (1998) and Cooper et al (2001b). Tone and Sahoo (2004) provided the last approach developed for this purpose.…”

Section: The Congestion Effectmentioning

confidence: 99%

Performance and congestion analysis of the portuguese hospital services

Simões

Marques

2009

Cent Eur J Oper Res

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The health care services have been characterised by a growing demand by the citizens leading to the need of more and more resources. Population aging, new pathologies and drugs as well as new treatments are some of the major factors for this. However, in hospitals, for example, consumption of a large number of inputs frequently has not corresponded to the production of the same or more proportion of outputs. Sometimes, the outputs even decline with the increase of inputs due to the influence of the congestion effect on efficiency. The heavy burden of the health sector on the state budget brings about the interest of research over its efficiency. This paper aims to assess the performance of the Portuguese hospitals and particularly the contribution of the congestion effect. We use the non-parametric technique of data envelopment analysis (DEA) for this purpose and a double-bootstrap procedure to take into account the influence of operational environment on efficiency. Afterwards, by comparing three different approaches we determine the importance of congestion in efficiency measurement and discuss its computation methodologically. The results suggest significant levels of inefficiency in 68 major Portuguese hospitals for the year 2005 and more than half of them were found to be congested.

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Section: The Congestion Effectmentioning

confidence: 99%

Performance and congestion analysis of the portuguese hospital services

Simões

Marques

2009

Cent Eur J Oper Res

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“…13 This exercise demonstrates that an upward-sloping isoquant (negative marginal product for one of the inputs) is necessary but not sufficient for congestion to occur under Färe"s approach. In fact, for congestion to be identified, the isoquant would need to be relatively steep or flat over the relevant range.…”

Section: A Comparison Of Approachesmentioning

confidence: 95%

Congestion in the Chinese automobile and textile industries revisited

Flegg

Allen

2009

Socio-Economic Planning Sciences

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“…Färe et al (1985) subsequently proposed an operational input-oriented weak disposal DEA model for dealing with input congestion measurement. Using a slack-based DEA approach proposed by Cooper et al (1996), Brockett et al (1998) estimated the inefficiency and amounts of input congestion in the Chinese empirical production before and after the 1978 economy reforms. Their results indicated that the textiles, chemicals, and metallurgy industries all exhibited input slacks due to the huge labour employment problem and all slacks of labour input in each industry were attributed to congestion.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Based on the previous literature, we note that at least three methods for measuring input congestion have been developed: the Färe-Grosskopf-Lovell (FGL) method by Färe et al (1985), the Cooper-Thompson-Thrall (CTT) method by Cooper et al (1996), and the Tone-Sahoo (TS) method (2004). These three methods differ fundamentally: the FGL method used a radial Farrell (1957) measure, while the CTT and TS methods used a slack-based measure to identify the input(s) responsible for congestion.…”

Section: Literature Reviewmentioning

confidence: 99%

Measuring Firms’ Input Congestion with Consideration of Environmental Factors: The Case of European Railway Transport

Lin¹

2016

Acta Oeconomica

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In practice, input congestion effects appear in railway transport due to the diffi culties of disposing of unnecessary input factors. This study measures the output-oriented technical effi ciency and input congestion with consideration of categorical variables for railway transport by using the DEA extension approach. The empirical results from 24 European railway companies show that in 12 railways, the presence of weak congestion can be proved. Based on the results of identifying the source(s) of input congestion and further determining its amount, one can obtain more insights into railways' operation and thus propose more effective strategies for improvement.

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Chapter 1 Introduction: Extensions and new developments in DEA

Cited by 181 publications

References 40 publications

Performance and congestion analysis of the portuguese hospital services

Performance and congestion analysis of the portuguese hospital services

Congestion in the Chinese automobile and textile industries revisited

Measuring Firms’ Input Congestion with Consideration of Environmental Factors: The Case of European Railway Transport

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