Cross validation and over-fitting

22 Feb 2018 on Math

1. Polynomial Regression

$y=\beta _{0}+\beta _{1}x+\beta _{2}x^{2}+\beta _{3}x^{3}+\cdots +\beta _{n}x^{n}+\varepsilon$

2. Cross Validation

- k-fold cross-validation

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Reference

polynomial regression - wikipedia