In this paper we investigate whether the price of gold is affected by internal and external macroeconomic performance, which is reflected in exchange rate movements
We present new model for analyzing compositional data with structural zeros. Inspired by Butler and Glasbey (2008) who suggested a model in the presence of zero values in the data we propose a model that treats the zero values in a different manner.
Discriminant analysis for spherical data, or directional data in general, has not been extensively studied, and most papers focus on one distribution, the von Mises-Fisher. In this work, we study more distributions, escaping the rotational symmetry bound of the aforementioned distribution and also include a non parametric classier, the k-NN algorithm.
A folded type model is developed for analyzing compositional data based that provides a new and flexible class of distributions for modeling data defined on the simplex sample space. Despite its rather
seemingly complex structure, employment of the EM algorithm guarantees efficient parameter estimation.
In the present paper we develop a two-period unionized mixed duopoly model, furnished with second period- demand shocks, where decentralized firm-specific wage bargains are struck in each period before product market competition is in place.
We study firms’ incentives to offer profit-sharing schemes in a unionized differentiated goods duopoly in which firms bargain with a sector-wide union or firm-specific unions over the selected remuneration schemes.
Εγγραφείτε στην λίστα ειδοποιήσεων του Τμήματος Οικονομικών Επιστημών.