研究所、轉學考(插大)◆工程數學題庫

【非選題】

1. (15%) You did an experiment and got the following data points of (x, y) pair:

(0,0), (2,2), (3,6), and (4,12).

You hypothesize that y = f(x) = a+bx, where

You would like to fit f(x) to the data points.

【題組】

(1.3) Now you want to perform a least-square-error fit (also called a linear regression) of f(x) to the four given data points, that is,
Please explain why the optimal solution, V', is the projection of vector c onto CS
(A). (4%)