MikCompute.tioga
Copyright Ó 1987 by Xerox Corporation. All rights reserved.
Mik Lamming, July 20, 1987 4:12:03 pm PDT
Rick Beach, July 20, 1987 4:15:50 pm PDT
Mik's Least Squares Derivation
Mik Lamming, PARC/CSL
May 11, 1987
Least Squares Derivation
Let X be defined to be:
X .
Then we wish to compute:
X
and
X .
By the chain rule for differentiation, we have:
X , and X ,
hence since X is X ,
and X is X ,
we have:
X is X
X is X