Two Step Estimation Method for Translog Cost Function : An Application to Spanish Airport Network

IF 0.3 4区 工程技术 Q4 ECONOMICS
Martin Cejas, R. Rendeiro
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引用次数: 8

Abstract

This article reports on the use of a two-step estimation method to analyze the productive structure of the airport industry in Spain. The author used the dual cost function and translog joint cost function to complete the estimation method. The author derives some parameters from the translog function such as economies of scale and price elasticities. The author concludes that, particularly when the data is scarce, the two-step estimation method for translog cost function is a useful technique. Comparing the results obtained with the empirical evidence for the airport industry, the aggregate output variable can induce to substantial errors in the estimation of technological parameters. In a practical example, the author notes that the separation of passenger and freight data into separate categories to measure airport output allows one to support the hypothesis that the economies of scale verified in the airport industry are associated with load and unload operations rather than with handling passengers through the terminal building.
超对数代价函数的两步估计方法:在西班牙机场网络中的应用
本文报告了使用两步估计方法来分析西班牙机场产业的生产结构。本文采用对偶代价函数和超对数联合代价函数来完成估计方法。作者从超对数函数中导出了规模经济和价格弹性等参数。作者认为,在数据稀缺的情况下,超对数代价函数的两步估计方法是一种有用的方法。将所得结果与机场工业的经验证据进行比较,总产出变量会导致技术参数估计出现较大误差。在一个实际的例子中,作者指出,将客运和货运数据分为不同的类别来衡量机场的输出,可以支持这样的假设,即在机场行业中验证的规模经济与装卸操作有关,而不是与通过航站楼处理乘客有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
0.90
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