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Estimation of inefficiency in stochastic frontier models: a Bayesian kernel approach

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    Estimation of technical change and price elasticities: a categorical time–varying coefficient approach

    We propose a categorical time-varying coefficient translog cost function, where each coefficient is expressed as a nonparametric function of a categorical time variable, thereby allowing each time period to ha...

    Guohua Feng, Jiti Gao, **aohui Zhang in Journal of Productivity Analysis (2018)

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