Arbeitspapier

Estimating alternative technology sets in nonparametric efficiency analysis: Restriction tests for panel and clustered data

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Nonparametric efficiency analysis has become a widely applied technique to support industrial benchmarking as well as a variety of incentive-based regulation policies. In practice such exercises are often plagued by incomplete knowledge about the correct specifications of inputs and outputs. Simar and Wilson (2001) and Schubert and Simar (2011) propose restriction tests to support such specification decisions for cross-section data. However, the typical oligopolized market structure pertinent to regulation contexts often leads to low numbers of cross-section observations, rendering reliable estimation based on these tests practically unfeasible. This small-sample problem could often be avoided with the use of panel data, which would in any case require an extension of the cross-section restriction tests to handle panel data. In this paper we derive these tests. We prove the consistency of the proposed method and apply it to a sample of US natural gas transmission companies in 2003 through 2007. We find that the total quantity of gas delivered and gas delivered in peak periods measure essentially the same output. Therefore only one needs to be included. We also show that the length of mains as a measure of transportation service is non-redundant and therefore must be included.

Language: Englisch

Bibliographic citation: Series: DIW Discussion Papers ; No. 1283

Classification: Wirtschaft
Semiparametric and Nonparametric Methods: General
Economics of Regulation
Gas Utilities; Pipelines; Water Utilities

Subject: benchmarking models
network industries
nonparametric efficiency estimation
data envelopment analysis
testing restrictions
subsampling
bootstrap

Event: Geistige Schöpfung

(who): Neumann, Anne
Nieswand, Maria
Schubert, Torben

Event: Veröffentlichung

(who): Deutsches Institut für Wirtschaftsforschung (DIW)

(where): Berlin

(when): 2013

Handle: http://hdl.handle.net/10419/71126

Last update: 10.03.2025, 11:44 AM CET

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Object type

Arbeitspapier

Associated

Neumann, Anne
Nieswand, Maria
Schubert, Torben
Deutsches Institut für Wirtschaftsforschung (DIW)

Time of origin

2013

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