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Efficiency measurement and regulation in US telecommunications: A robustness analysis

机译:美国电信中的效率测量和监管:稳健性分析

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The paper investigates the robustness of different efficiency measures that can support the implementation of diverse forms of incentive regulation in the context of US telecommunications. Comparisons, in terms of an output orientation, are considered for efficiency scores obtained from data envelopment analysis (DEA), distance function (with corrected ordinary least squares and a random effects model) and distance function embedded in a stochastic frontier framework (with time-invariant, time-varying efficiencies or with inefficiency effects). Similar to the previous empirical literature, one finds, in most cases, only a moderate consistency across the different approaches. In fact, the different spectrum of techniques imposed varied degrees of structure in the error term and indicated non-negligible discrepancies across the different measurement approaches in terms of the ranking structure, degree of persistence and best- and worst-practice patterns.
机译:本文研究了各种效率措施的鲁棒性,这些措施可以支持在美国电信环境下实施各种形式的激励监管。根据输出方向进行比较时,应考虑从数据包络分析(DEA),距离函数(具有校正的普通最小二乘法和随机效应模型)和嵌入随机边界框架中的距离函数(具有时间-不变的,随时间变化的效率或无效效果)。与以前的经验文献相似,在大多数情况下,人们发现在不同方法之间只有中等程度的一致性。实际上,不同的技术领域在误差项上施加了不同程度的结构,并且在等级结构,持续性程度以及最佳实践模式和最差实践模式方面,在不同的测量方法之间显示出不可忽略的差异。

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