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tune 1.1.0
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@topepo topepo released this 05 Apr 15:09
v1.1.0
110d0b7
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tune 1.1.0 introduces a number of new features and bug fixes, accompanied by various optimizations that substantially decrease the total evaluation time to tune hyperparameters in the tidymodels.

New features

  • Introduced a new function fit_best() that provides a shorthand interface to fit a final model after parameter tuning. (#586)

  • Refined machinery for logging issues during tuning. Rather than printing out warnings and errors as they appear, the package will now only print unique tuning issues, updating a dynamic summary message that maintains counts of each unique issue. This feature is only enabled for tuning sequentially and can be manually toggled with the verbose option. (#588)

  • Introduced collect_extracts(), a function for collecting extracted objects from tuning results. The format of results closely mirrors collect_notes(), where the extracted objects are contained in a list-column alongside the resample ID and workflow .config. (#579)

Bug fixes

  • Fixed bug in select_by_pct_loss() where the model with the greatest loss within the limit was returned rather than the most simple model whose loss was within the limit. (#543)

  • Fixed bug in tune_bayes() where .Last.tune.result would return intermediate tuning results. (#613)

  • Extended show_best(), select_best(), select_by_one_std_error(), select_by_pct_loss() to accommodate metrics with a target value of zero (notably, yardstick::mpe() and yardstick::msd()). (#243)

Other changes

  • Implemented various optimizations in tune's backend that substantially decrease the total evaluation time to tune hyperparameters with the tidymodels. (#634, #635, #636, #637, #640, #641, #642, #648, #649, #653, #656, #657)

  • Allowed users to supply list-columns in grid arguments. This change allows for manually specifying grid values that must be contained in list-columns, like functions or lists. (#625)

  • Clarified error messages in select_by_* functions. Error messages now only note entries in ... that are likely candidates for failure to arrange(), and those error messages are no longer duplicated for each entry in ....

  • Improved condition handling for errors that occur during extraction from workflows. While messages and warnings were appropriately handled, errors occurring due to misspecified extract() functions being supplied to control_*() functions were silently caught. As with warnings, errors are now surfaced both during execution and at print() (#575).

  • Moved forward with the deprecation of parameters() methods for workflows, model_specs, and recipes. Each of these methods will now warn on every usage and will be defunct in a later release of the package. (#650)

  • Various bug fixes and improvements to documentation.

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