Before revision:  This paper investigates the use of a Multilayer Perceptron (MLP), Classification and Regression Trees (CART),  and an Ordered Logit (OL) model for the prediction of sovereign credit ratings.
After revision:  This paper investigates the use of a Multilayer Perceptron (MLP), Classification and Regression Trees (CART), Support Vector Machines (SVM), Na\"ive Bayes (NB), and an Ordered Logit (OL) model for the prediction of sovereign credit ratings.