“Wrong” skewness and endogenous regressors in stochastic frontier models: an instrument-free copula approach with an application to estimate firm efficiency in Vietnam
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Productivity Analysis"
DOI: 10.1007/s11123-024-00722-6
Abstract: Stochastic frontier models commonly assume positively skewed inefficiency. However, if the data speak against this assumption, sample-failure problems are often cited, but less attention is paid to economic reasons. We consider this phenomenon as a… read more here.
Keywords: wrong skewness; instrument free; frontier models; endogenous regressors ... See more keywords
A distribution-free stochastic frontier model with endogenous regressors
Sign Up to like & getrecommendations! Published in 2018 at "Economics Letters"
DOI: 10.1016/j.econlet.2017.12.026
Abstract: Abstract We provide a guideline for estimating a distribution-free panel data stochastic frontier model in the presence of endogenous variables. In particular, we consider variations of the within estimator of Cornwell et al. (1990) to allow… read more here.
Keywords: endogenous regressors; distribution free; frontier model; stochastic frontier ... See more keywords