Random Forest: Residuals \(r_i\) in function of an (arbitrary) identifier of the observation

The plot indicates:

• An asymmetric distribution of residuals around zero
• An excess of large positive (larger than 500) residuals without a corresponding fraction of negative values.

plot(md_rf, variable = "ids", yvariable = "residuals")

## `geom_smooth()` using method = 'gam' and formula = 'y ~ s(x, bs = "cs")'