Determinants of Vietnam's rice and coffee exports: using stochastic frontier gravity model

Gravity Model of Trade and Russian Exports

A Gravity Model for Exports from Iceland

This paper applies a gravity model to examine the determinants of Icelandic exports. The model specifications tested allow for sector and trade bloc estimation. Also, a combination of an export ratio and a gravity model is tested, as well as marine product subsamples. The estimates are based on panel data on exports from 4 sectors, to 16 countries, over a period of 11 years. Estimates indicate ...

Modeling dependence between error components of the stochastic frontier model using copula: Application to intercrop coffee production in Northern Thailand

In the standard stochastic frontier model, the two-sided error term V and the one-sided technical inefficiency error term W are assumed to be independent. In this paper, we relax this assumption by modeling the dependence between V and W using copulas. Nine copula families are considered and their parameters are estimated using maximum simulated likelihood. The best model is then selected using...

A Laplace Stochastic Frontier Model

We propose a Laplace stochastic frontier model as an alternative to the traditional model with normal errors. An interesting feature of the Laplace model is that the distribution of inefficiency conditional on the composed error is constant for positive values of the composed error, but varies for negative values. Therefore, it may be ideally suited for analyzing industries with many forms on o...

stochastic frontier model with distributional assumptions for rice production technical efficiency

efficiency in agricultural production is indicative of the efficiency level of farm households in their farming activities. farmers in developing countries do not make use of all the potential technological resources, thus making inefficient decisions in their agricultural activities. herein, technical efficiency in relation with the production of three types of rice crop (boro, aus and aman) w...