1 This paper presents an empirical comparison of the following approaches to estimate annual 2 mileage budgets for multiple discrete-continuous extreme value (MDCEV) models of household 3 vehicle ownership and utilization: (1) The log-linear regression approach to model observed total 4 annual household vehicle miles traveled (AH-VMT), (2) The stochastic frontier regression 5 approach to model ...

Received analyses based on stochastic frontier modeling with panel data have relied primarily on results from traditional linear fixed and random effects models. This paper examines extensions of these models that circumvent two important shortcomings of the existing fixed and random effects approaches. The conventional panel data stochastic frontier estimators both assume that technical or cos...

In the standard stochastic frontier model with sample selection, the two components of the error term are assumed to be independent, and the joint distribution of the unobservable in the selection equation and the symmetric error term in the stochastic frontier equation is assumed to be bivariate normal. In this paper, we relax these assumptions by using two copula functions to model the depend...

This study investigates onion producers’ technical efficiency level in Kebbi State. Purposive and simple random sampling procedures were adopted selecting 210 producers using structured questionnaire from seven local government areas the state. Descriptive statistics, gross margin stochastic frontier production models employed describing analyzing data. The results showed that generated an aver...