1.错误于solve.default....
use percentage log returns
2.建议你用 jplv7 toolbox
matalb Econometrics Toolbox: by James P. LeSage
[url]http://www.spatial-econometrics.com/html/jplv7.zip[/url]
jplv7\Ucsd_garch\MV Garch\Bekk
jplv7\Ucsd_garch\MV Garch\T Bekk ( T-dist errors.)
[parameters, loglikelihood, Ht, likelihoods, stdresid, stderrors, A, B, scores] = full_bekk_mvgarch(data,p,q, BEKKoptions)
or diagonal_bekk_mvgarch()
scalar_bekk_mvgarch()