Overcoming Data Limitations in Nonparametric Benchmarking: Applying PCA-DEA to Natural Gas Transmission

Nieswand, Maria; Cullmann, Astrid; Neumann, Anne

doi:10.2202/1446-9022.1209

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…There are two main streams of efficiency evaluation and benchmarking approaches in the literature: nonparametric and parametric. DEA as a nonparametric approach and stochastic frontier analysis (SFA) as a parametric approach are the most commonly used methods (Nieswand, Cullmann, & Neumann, ). DEA is a nonparametric method used to empirically measure the relative efficiency of decision making units (DMUs) that use multiple inputs to produce multiple outputs (Charnes, Cooper, & Rhodes, ).…”

Section: Methodsmentioning

confidence: 99%

“…DEA is a nonparametric method used to empirically measure the relative efficiency of decision making units (DMUs) that use multiple inputs to produce multiple outputs (Charnes, Cooper, & Rhodes, ). As a nonparametric method, DEA's reference technology is not determined by imposing a functional form that describes the production process, but by means of linear programming methods assuming a transformation of inputs into outputs (Nieswand et al., ). The basic DEA models consider two types of technology, constant returns to scale (CRS) proposed by Charnes et al.…”

Section: Methodsmentioning

confidence: 99%

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Efficiency Evaluation in Search Advertising

Ayanso

Mokaya

2013

Decision Sciences

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In this article, we use data envelopment analysis combined with principal component analysis to evaluate the efficiency of online retailers in search advertising. We examine various efficiency model specifications involving several resource and performance‐related variables in search advertising. Our analysis based on 200 retailers suggests different efficiency patterns for multichannel and Web‐only retailers. The results of our efficiency pattern analysis indicate that the performance metrics, impressions, online sales, click‐through rate, and conversion rate together reveal differences in efficiency mainly for multichannel retailers. On the other hand, ad positions in sponsored and organic links reveal differences in efficiency for Web‐only retailers. In terms of overall efficiency, we find that multichannel retailers occupy relatively most of the top positions. These results contribute to organizational level understanding of search advertising practices in online retailing and offer insights into keyword management, resource utilization, and performance metrics in search advertising campaigns.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Efficiency Evaluation in Search Advertising

Ayanso

Mokaya

2013

Decision Sciences

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“…The use of PCA-DEA approach for performance assessment can be found in different fields (aviation (Adler and Golany, 2001); manufacturing (Azadeh et al, 2007, Põldaru et al, 2014; logistics (Andrejić et al, 2013, Chen et al, 2016, Jiang and Fu, 2009; ecology (Liang et al, 2009, Nieswand et al, 2009; agriculture (Dong et al, 2016); finance (Jothimani et al, 2017); health (Annapoorni and Prakash, 2017)). To our knowledge there is one paper (Adler and Golany, 2002) where hybrid PCA and DEA approach was applied for education data (assessed performance of seven university departments).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Education Systems Performance in European Countries by Means of PCA-DEA

Jakaitienė¹,

Žilinskas²,

Stumbrienė³

2018

Informatics in Education

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Many countries have focused on the improvement of education system performance. Small number of studies consider system of a country as unit of assessment where indicators represent all levels of education system. In the paper, we propose the methodology for the performance analysis of education systems as a whole hybridizing Data Envelopment Analysis and Principal Component Analysis. Its applicability is illustrated by the analysis of the data collected for 29 European countries. In the analysis we used publicly available data from EUROSTAT and OECD which European Commission uses for the performance monitoring of education in European Union. No prior assumptions were made or expert judgements included. We demonstrated good performance of the method on limited data set. The proposed methodology of hybrid Data Envelopment Analysis and Principal Component Analysis allows researchers analyse education systems quantitatively. The recommendations for improvements and assessment of real world education systems should be based on the analysis of a sufficiently large data set comprehensively representing the considered education systems.

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Cost Efficiency and Subsidization in German Local Public Bus Transit

Nieswand

Walter²

2010

SSRN Journal

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Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Abstract Subsidies are considered important means to facilitate the provision of public transit, yet the empirical evidence implies that they can have harming effects on costs and possibly also on operators' performance. This paper examines the impacts of deficit-balancing subsidies on the cost inefficiency of local public bus companies in Germany, where a complex system allocates ample financial support. Our empirical analysis relies on a unique dataset of 33 companies observed over a period of up to twelve years for a total of 231 observations. We employ a stochastic frontier cost function for panel data that account for unobserved heterogeneity and provide firm-specific, time-varying inefficiency estimates. Further, we allow variations in the optimal technology by randomizing some cost functions' coefficients in one of our model specifications. Subsidies directly enter the inefficiency function as a heteroscedastic variable. We find a positive effect of subsidies on the standard deviation of inefficiency, which implies that the range of companies' inefficiency increases with the level of subsidies relative to total costs. However, we also find that non-subsidized firms perform better in terms of cost efficiency. Terms of use: Documents in JEL Codes: C13, D24, L92

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Overcoming Data Limitations in Nonparametric Benchmarking: Applying PCA-DEA to Natural Gas Transmission

Cited by 5 publications

References 9 publications

Efficiency Evaluation in Search Advertising

Efficiency Evaluation in Search Advertising

Analysis of Education Systems Performance in European Countries by Means of PCA-DEA

Cost Efficiency and Subsidization in German Local Public Bus Transit

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