The world economy has been undergoing substantial change, especially from restructuring among formerly planned economies, developing economies and also among developed economies where serious imbalances occurred. In adapting to these changes, the economies of the world have shown a great deal of...

The paper estimates a medium-term forecasting model used to generate short-term series of the quarterly GDP. The GDP used was computed using the expenditures decomposition method in accordance with the national accounts, and the data were generated by applying the principal components analysis...