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Multivariate adaptive regression splines (MARS) is a regression model that involves automatic term selection, including automatic selection of interactions. The name "MARS" is trademarked, so free-software implementations often use the term "Earth" instead.

3
votes
plotmo package. On that cover page, we can see how in the humidity degree1 plot, the MARS curve doesn't appear to follow the dots for the plotted response. (In your example, the effect is more extreme …
answered Jan 25 '18 by Stephen Milborrow
1
vote
Prediction intervals are supported by earth version 4.0.0 (Dec 2014) and higher. See the vignette Variance models in earth that comes with the earth package. You can generate plots such as the followi …
answered May 1 '15 by Stephen Milborrow
1
vote
Some of your predictors are factors, and you therefore have to specify the factor level names in the PREDICTORS and PARENTS variables. So incorporate location.id11003 location.id11005 location.id11006 …
answered Jul 13 '18 by Stephen Milborrow
2
votes
To elaborate slightly on Eric Farng's comment that removing outliers until the fit of the model is maximized is not recommended: The fundamental problem with tweaking the data until you get a good …
answered Jun 12 '15 by Stephen Milborrow
1
vote
Earth will easily handle your 20 thousand by 100 matrix. That model requires less than a quarter of a gig of memory. The inst/slowtests/test.big.R file in the earth test suite has a model with 6 m …
answered May 1 '15 by Stephen Milborrow