LOOCV calculation Error

[ice-melon]

In loo_shortcut(X, y) function, acorrding to the ITSL,
mse = ((y[row] - ypred[row]) / (1 - hi))**2 should be right

[sujitpal]

Thank you, this is for the chapter5 notebook right? Can you please reference the equation in ITSL where you see this (page number/equation number)? Its been a while since I did this, but the only equation for MSE I see in ITSL is equation 2.5 on Page 29, where the denominator is not squared.