An explicit function for creating a resusable XGBoost model

[CarmenCiardiello]

Saving XGBoost worklfow

I have a couple of xgboost models in production that are saved as workflow objects in a RDS file. There seems to be some compatibility issues with the the updated version of xgboost. Not sure what/if there is a remedy to this, but having a function to explicitly save the workflow object as something this is reusable and compatible with xgboost.

[simonpcouch]

Thanks for the issue, @CarmenCiardiello!

For now, xgboost models fitted with parsnip (and possible wrappers like workflows, workflowsets, stacks) will be susceptible to the kind of instability across versions noted in the xgboost documentation on saving and memory snapshots.

We're actively working on better infrastructure for supporting native serialization like xgboost's xgb.save(). That work currently lives at https://github.com/simonpcouch/bundle if you'd like to follow our development, but we will be integrating this functionality under the hood in objects outputted by tidymodels packages soon.

[CarmenCiardiello]

Thanks for pointing me in this direction!

[simonpcouch]

Closing in favor of #781. Thanks for the issue!

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