Estimation of the covariance matrix is an essential task of portfolio selection. A multivariate approach is needed. Unfortunately, it is leading to a flat likelihood function for a realistic number of assets. This paper is proposing a principal components analysis together with a sophisticated...

We use a simple nonlinear commodity market model to illustrate the impact of recent reforms of the CAP on the variability of EU and world wheat prices. Second, within an expected utility framework we estimate the transfer and risk effects on producer welfare due to market liberalizing reforms....

A dynamic Bayesian Vector Autoregressive model of the U.S. dairy price complex is estimated based on the Normal-Wishart distribution. The Gibbs sample technique is use with the Normal-Wishart distribution to provide conditional forecasts on the future time-paths of the model variables. The...

It is the objective of this paper to provide a methodological framework for the analysis of regional marketing programs which inlclude regional-origin labelling as well as quality assurance and control. Such programs are increasingly being introduced in Europe and other parts of the world as a...