The literature on excess return prediction has considered a wide array of estimation schemes, among them unrestricted and restricted regression coefficients. We consider bootstrap aggregation (bagging) to smooth parameter restrictions. Two types of restrictions are considered: positivity of the...

The financial theory related to the bond portfolio analysis was coined by Harry Markowitz, an authentic’ pioneer of the modern bond theory’, and his well-thought interpretation of the bond selection model may be found in his research papers “Portfolio Selection” (Markowitz M. Harry,...

This report comprises an analysis over 40 countries from the group ONECE and over the following two variables : GDP per capita and Unemployment rate in the year 2011. The following report consist of more sections; it begins with calculating the central tendency indicators, which will have a role...

Non-parametric methods are useful, but raises some problems. In practice, they require a large number of observations and are used for a relatively small number of explanatory variables. Moreover, the result is sensitive to the choice of the smoothing parameter and to a lesser extent in the...