E-net classification model

[wdoyle42]

Function that will generate predicted probabilities from the restructured data using an elastic net logistic regression model.

[wdoyle42]

Hard to see why to do this, given that it's now just

grad_mod<-
  logistic_reg(penalty=tune(),mixture = tune())%>%
  set_engine("glmnet")

via workflows, per #23

I have now shown flexibility by asking and answering my own question.

[btskinner]

@wdoyle42, rubber duck debugging at its finest.