Estimating Technical Efficiency Under Unobserved Heterogeneity with Stochastic Frontier Models: Application to Northern German Dairy Farms

By Awudu Abdulai, Hendrik Tietje. 2007

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Technical efficiency and productivity differentials of dairy farms in three EU countries: the role of CAP subsidies (2012, background): “Therefore, the analysis of farm efficiency and the comparison of production technologies across countries provide insights to the competitiveness of farms and their potential for improving productivity and resource use (Abdulai and Tietje, 2007).”
Persistent and transient productive inefficiency: a maximum simulated likelihood approach (2015, unknown): “2005b; Abdulai and Tietje 2007; Baranzini and Faust 2014). This comparison, usually performed by calculating a rank correlation coefficient of the index of efficiency, will ignore the possibility that the values obtained with the time invariant models reflect something different from those obtained ”
Identifying different technologies using a latent class model: extensive versus intensive dairy farms (2010, methodology): “The true random effects model, which assumes that there is a firm-specific random term to capture firm heterogeneity, has been used in Abdulai and Tietje (2007) and Farsi and Filippini (2008).”