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→Estimation of MSPE: T rather than prime sign to avoid reader confusion; sequencing inner terms same as elsewhere |
→Estimation of MSPE: finishing prime sign → T |
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:<math>\sum_{i=1}^n\left(\operatorname{E}\left[g(x_i)-\widehat{g}(x_i)\right]\right)^2
=\operatorname{E}\left[\sum_{i=1}^n\left(y_i-\widehat{g}(x_i)\right)^2\right]-\sigma^2\operatorname{tr}\left[\left(I-L\right)
Thus,
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