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多变量的GARCH 有大致有三种:
Constant Conditional Correlation by Bollerslev (1990)
BEKK by Engle and Kroner (1995)
Each element of the covariance matrix by Bollerslev, Engle and Woodridge (1988)
以前有人在论坛讲有BEKK code, 我本人只有 CCC code.