Multivariate adaptive regression spline: Difference between revisions

Revision as of 19:39, 23 March 2019

Revision as of 19:42, 23 March 2019

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In the ozone formula above, the intercept term is 5.2.

2) a ''hinge'' function. A hinge function has the form <math> \max(0, x - const\text{constant}) </math> or <math> \max(0, const\text{constant} - x) </math>. MARS automatically selects variables and values of those variables for knots of the hinge functions. Examples of such basis functions can be seen in the middle three lines of the ozone formula.

3) a product of two or more hinge functions.