小洁子wj 发表于 2012-3-22 10:33 
Thanks for your specific advice,thanks again
The formula for the lr test statistic is:
lr = -2 ln(L(m1)/L(m2)) = 2(ll(m2)-ll(m1))
Where L(m*) denotes the likelihood of the respective model (either model 1 or model 2),
and ll(m*) the natural log of the model's final likelihood (i.e., the log likelihood).
Where m1 is the more restrictive model, and m2 is the less restrictive model.
Table4:
GBM & GBM +Jump
2*(23761.81-22370.27) # 2783.08
GARCH & GARCH +Jump
2*(24662.15-24186.33) # 951.64