RDP 2002-06: Output Gaps in Real Time: are they Reliable Enough to use for Monetary Policy?
Equation (A8)
ε
T
ε=
(
Ψ
+
A
Y
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)
T
(
Ψ
+
A
Y
∗
)
=
Ψ
T
Ψ
+
2
Ψ
T
A
Y
∗
+
Y
∗
T
A
T
A
Y
∗
.
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