FORECASTING QUARTERLY BRAZILIAN GDP GROWTH RATE WITH LINEAR AND NONLINEAR DIFFUSION INDEX MODELS
The present study uses linear and non-linear diffusion index models to produce one-stepahead forecast of quarterly Brazilian GDP growth rate. Diffusion index models are like dynamic factors models. The non-linear diffusion index models used in this work are not only parsimonious ones, but also they try to capture economic cycles using for this goal a Threshold diffusion index model and a Markov-Switching diffusion index model.