. Consider a linear smooth f = Sy where S is a linear smoother and y = (Y1,..., Y,)". Let b = f - E(Sy) be the bias vector. Show that Σ(f(X ) + , Σε MSE = var n i=1 trace(SST) + n EE{Y; - Î(X;)}² PSE = trace(SST 1+ b"b %3D n

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2. Consider a linear smooth f = Sy where S is a linear smoother and y
f - E(Sy) be the bias vector. Show that
= (Y1,...,Yn)T. Let b =
1
MSE =
1
Σ
var(f(X;)) +
- > b?
n
trace(SST)
1
PSE
EE{Y* - Î(X;)}²
|
n
trace(SST)
1+
b™b
o2 +
n
where Y;* is a new observation.
Transcribed Image Text:2. Consider a linear smooth f = Sy where S is a linear smoother and y f - E(Sy) be the bias vector. Show that = (Y1,...,Yn)T. Let b = 1 MSE = 1 Σ var(f(X;)) + - > b? n trace(SST) 1 PSE EE{Y* - Î(X;)}² | n trace(SST) 1+ b™b o2 + n where Y;* is a new observation.
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