MPRA
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Similary, we also get<br />
vec( ̂B<br />
{<br />
n ̂Σεn ̂Bn − B 0 Σ ε B 0 ) = I m ⊗ ( ̂B<br />
}<br />
n ̂Σεn ) + ((B 0 Σ ε ) ⊗ I m ) vec( ̂B n − B 0 )<br />
+ (B 0 ⊗ ̂B n )D m vech( ̂Σ εn − Σ ε )<br />
and<br />
vec(Ĉn ̂Σ xn Ĉ ′ n − C 0 Σ x0 C ′ 0) =<br />
{I m ⊗ (Ĉn ̂Σ<br />
}<br />
xn ) + ((C 0 Σ x ) ⊗ I m )M mr vec(Ĉ′ n − C ′ 0)<br />
+ (C 0 ⊗ Ĉn)D r vech( ̂Σ xn − Σ x ).<br />
Let<br />
{<br />
 ∗ n = −P m I m ⊗ (Ân ̂Σ<br />
}<br />
εn ) + ((A 0 Σ ε0 ) ⊗ I m )M mm ,<br />
{<br />
̂B ∗ n = −P m I m ⊗ ( ̂B<br />
}<br />
n ̂Σεn ) + (B 0 Σ ε0 ) ⊗ I m ,<br />
{<br />
Ĉ ∗ n = −P m I m ⊗ (Ĉn ̂Σ<br />
}<br />
xn ) + ((C 0 Σ x0 ) ⊗ I m )M mr ,<br />
Ê ∗ n = P m (I m 2 − B 0 ⊗ ̂B n − A 0 ⊗ Ân)D m ,<br />
̂X∗ n = −P m (C 0 ⊗ Ĉn)D r .<br />
We then have<br />
√ n(̂ωn − ω 0 ) =<br />
(<br />
Â∗ n<br />
̂B ∗ n<br />
Ĉ ∗ n<br />
Ê ∗ n<br />
̂X ∗ n<br />
⎛<br />
) √n ⎜<br />
⎝<br />
⎞<br />
â n − a 0<br />
̂bn − b 0<br />
ĉ n − c 0<br />
, (32)<br />
̂γ εn − γ ε0<br />
⎟<br />
⎠<br />
̂γ xn − γ x0<br />
where â n = vec(Â′ n), ̂b n = vec( ̂B n ) and ĉ n = vec(Ĉ′ n) are the estimators of a 0 =<br />
vec(A ′ 0), b 0 = vec(B 0 ) and c 0 = vec(C ′ 0) respectively. Note that<br />
⎛<br />
⎞<br />
â n − a 0<br />
⎛<br />
⎞<br />
̂bn − b 0<br />
̂θ n − θ 0<br />
ĉ n − c 0<br />
= Ψ ⎜ ̂γ ⎝ εn − γ ε0<br />
⎟<br />
⎠ , (33)<br />
⎜ ̂γ<br />
⎝ εn − γ ε0<br />
⎟ ̂γ<br />
⎠<br />
xn − γ x0<br />
̂γ xn − γ x0<br />
25