Skip to content

tune 2.0.0

Choose a tag to compare

View all tags
@topepo topepo released this 31 Aug 13:06
v2.0.0
c87e33d
This commit was created on GitHub.com and signed with GitHub’s verified signature.
GPG key ID: B5690EEEBB952194
Verified
Learn about vigilant mode.

Changes to tune_grid().

  • A major rewrite/refactor of the underlying code that runs tune_grid(). This was an upgrade to add postprocessing and to modernize our parallel processing infrastructure.

  • The pattern of .config values has changed.

    • For grid search, it changes from Preprocessor{num}_Model{num} to pre{num}_mod{num}_post{num}. The numbers include a zero when that element was static. For example, a value of pre0_mod3_post4 means no preprocessors were tuned and the model and postprocessor(s) had at least three and four candidates, respectively.
    • For iterative search, the pattern is not iter{num} instead of Iter{num} and the numbers are now zero padded to sort better. For example, if there between 10 and 99 iterations, the first .config value is now iter01 instead of Iter1.

  • The package will now log a backtrace for errors and warnings that occur during tuning. When a tuning process encounters issues, see the new trace column in the collect_notes(.Last.tune.result) output to find precisely where the error occurred (#873).

  • Postprocessors can now be tuned. Currently, we support the tailor package.

Parallel Processing

  • Introduced support for parallel processing with mirai in addition to the currently supported framework future. See ?parallelism to learn more (#1028).

  • Sequential and parallel processing all use the same L'Ecuyer-CMRG seeds (conditional on parallel_over) (#1033).

Breaking Changes

  • The foreach package is no longer supported. Instead, use the future or mirai packages.

  • The parallel backend(s) and the methods of constructing seeds for workers have changed. There will be a lack of reproducibility between objects created in this version of tune and previous versions.

Other Changes

  • int_pctl() now includes an option (keep_replicates) to retain the individual bootstrap estimates. It also processes the resamples more efficiently (#1000).

  • A min_grid() methods was added for proportional_hazards models so that their submodels are processed appropriately.

  • Post-processing: new schedule_grid() for scheduling a grid including post-processing (#988).

  • Removed functions deprecated since tune version 1.6.0 (circa 2021-07-21).

Assets 2
Loading