Measuring technological bias
基于超越对数成本函数构建模型，检验技术进步及其带来的要素投入偏向和规模偏向，并检验诱致性技术偏向。利用电力公用事业发电行业数据估计模型，发现存在技术进步和技术偏向，但未发现诱致性技术偏向。技术进步年均约1.5%，观测值为1.7%。
In this paper, a model based on the translog cost function and designed to test for technological advancement, factor-input and scale biases arising from technological advancement, and induced technological bias is described. The model is estimated with data from the electrical utility generation industry. While the empirical results for that industry demonstrate the existence of technological advancement and technological bias, both with regard to factor inputs and scale economies, the results failed to demonstrate the existence of induced technological bias. The results of this study indicate an average annual rate of technological advancement of approximately 1.5 percent while the average observed rate is 1.7 percent.