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mattwarkentin / ordered

Bindings for ordinal classification models for use with the 'parsnip' package, such as ordinal random forests by Hornung R. (2020) <doi:10.1007/s00357-018-9302-x> and others.
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ordinal_reg model type with polr engine #4

Open corybrunson opened 4 days ago

corybrunson commented 4 days ago

As a new model type and first and probable default engine, my understanding is that these both need to be defined, using separate make_*() functions. I've drafted both in this fork branch and raise the issue ahead of submitting a pull request.

Should the issue remain open until the entire checklist #3 is completed? If so, then shall we copy the checklist here? (These would be my suggestion.)

(In future, i will raise an issue before doing substantive work, but in this case the work was worth the familiarity-building.)

corybrunson commented 3 days ago

Coordination with the rest of Tidymodels is underway in ordinal_reg fork branches of {parsnip} and of {dials}. One tunable parameter is added—the ordinal link function—following the pattern set by the existing survival link function for {censored}.