biggest_reference {insurancerating} | R Documentation |
Set reference group to the group with largest exposure
Description
This function specifies the first level of a factor to the level with the largest exposure. Levels of factors are sorted using an alphabetic ordering. If the factor is used in a regression context, then the first level will be the reference. For insurance applications it is common to specify the reference level to the level with the largest exposure.
Usage
biggest_reference(x, weight)
Arguments
x |
an unordered factor |
weight |
a vector containing weights (e.g. exposure). Should be numeric. |
Value
a factor of the same length as x
Author(s)
Martin Haringa
References
Kaas, Rob & Goovaerts, Marc & Dhaene, Jan & Denuit, Michel. (2008). Modern Actuarial Risk Theory: Using R. doi:10.1007/978-3-540-70998-5.
Examples
## Not run:
library(dplyr)
df <- chickwts |>
mutate(across(where(is.character), as.factor)) |>
mutate(across(where(is.factor), ~biggest_reference(., weight)))
## End(Not run)
[Package insurancerating version 0.7.4 Index]