search

tidymodels / dials

Tools for creating tuning parameter values
https://dials.tidymodels.org/
Other
113 stars 27 forks source link

Unknown Values and using update_role #134

Closed vincentgaul closed 4 years ago

vincentgaul commented 4 years ago

mtry() for example is dependant on data size

I don't know if this is currently possible, but would it be useful to reference a recipe so grid can be made of the number of predictors? For example my df may have 50 columns, but 5 might have an "ID" role

juliasilge commented 4 years ago

If you are using a parsnip model (i.e. not tune) you might look into data descriptors such as .cols(). You can specify a model such as:

library(parsnip)

rand_forest(mode = "classification", mtry = .cols() - 2)

There is not support for this in tune and dials currently.

github-actions[bot] commented 3 years ago

This issue has been automatically locked. If you believe you have found a related problem, please file a new issue (with a reprex: https://reprex.tidyverse.org) and link to this issue.