Quote:
Originally Posted by jhmiller@tricity.wsu.edu
Thanks a million. I assume the mean square error between f and g is restricted to the range of x-values where training data exist. Is this correct?
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Correct, but the cause and effect is the other way around. The training data lies within the range of x-values where the mean-squared error is computed, namely the input space

which is a finite range in this case.