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1 vote
1 answer
135 views

Can multicollinearity of parametric terms in a GAM be ignored?

I've had such a hard time finding a source that addresses how to handle multicollinearity of parametric terms in a generalized additive model (GAM) that I'm starting to think it may not be important, ...
Nate's user avatar
  • 1,653
0 votes
0 answers
18 views

Must an alpha=0.01 be used to interpret significance of parametric terms in a GAM?

I have fit a time-series count HGAM with environmental covariates as parametric terms and year as a site-varying smooth term. I am wondering if I need to use an alpha threshold of 0.01 to interpret ...
Ryan's user avatar
  • 33
2 votes
1 answer
421 views

GAM - parametric coefficients - what is mgcViz::pterm() actually plotting?

I built a GAM with two categorical variables and two smooth terms, following this structure: ...
mto23's user avatar
  • 637
1 vote
1 answer
281 views

How to interpret the partial effect plots for parametric terms while using gratia::draw() and gratia::parametric_effects()?

I am asking a question akin to this one: https://stackoverflow.com/questions/71884457/what-does-the-y-axis-effect-mean-after-using-gratiadraw-for-a-gam but am wondering the same question for ...
David Smith's user avatar