“…For example, the proposed method can be extended to handle conditional heteroskedasticity by incorporating with the de-GARCHing technique, a popular method of modeling multivariate time series with the generalized autoregressive conditional heteroskedasticity (GARCH) effect (Engle, 2002(Engle, , 2009Grigoryeva, Ortega, & Peresetsky, 2018;Härdle, Okhrin, & Wang, 2015). For example, the proposed method can be extended to handle conditional heteroskedasticity by incorporating with the de-GARCHing technique, a popular method of modeling multivariate time series with the generalized autoregressive conditional heteroskedasticity (GARCH) effect (Engle, 2002(Engle, , 2009Grigoryeva, Ortega, & Peresetsky, 2018;Härdle, Okhrin, & Wang, 2015).…”