Horse race
You are now asked to run a horse race in terms of forecasting accuracy between the two approaches for making rolling GARCH model predictions:
garchroll: AR(1) standard GARCH model and student \(t\) distributiongjrgarchroll: AR(1) GJR GARCH model and skewed student \(t\) distribution.
The rolling estimations are implemented using n.start = 2500, refit.window = "moving", refit.every = 500.
The resulting ugarchroll objects are available in the console.
แบบฝึกหัดนี้เป็นส่วนหนึ่งของหลักสูตร
GARCH Models in R
แบบฝึกหัดเชิงโต้ตอบแบบลงมือทำ
ลองทำแบบฝึกหัดนี้โดยเติมโค้ดตัวอย่างนี้ให้สมบูรณ์
# Inspect the first three rows of the dataframe with out of sample predictions
garchpreds <- as.data.frame(garchroll)
head(garchpreds, ___)