Hafner, C.M.; Dijk, D.J.C. van; Franses, Ph.H.B.F. - Erasmus University Rotterdam, Econometric Institute - 2005
correlation matrix from R1 and R2 occurs instantaneously
at xt = c. In that case, estimation of the parameters is simpli ed … variable, for example, the market return or volatility at time
t 1. Assuming that we have a pT-consistent estimator of …
variable leads to more sizable changes in the conditional correlations than using the
market return. At the same time however …