Blasques, Francisco F.; Gorgi, Paolo; Koopman, Siem Jan S.J. - 2017
allows for a more flexible weighting of financial squared-returns for the filtering of volatility. The parameter for the …-return replaced by the product of the volatility innovation and its lagged value. This local estimate of the first order … autocorrelation of volatility innovations acts as an indicator of the importance of the squared-return for volatility updating. When …