CallbackAsyncTuning: Asynchronous Tuning Callback
In mlr3tuning: Hyperparameter Optimization for 'mlr3'

CallbackAsyncTuning

R Documentation

Asynchronous Tuning Callback

Description

Specialized bbotk::CallbackAsync for asynchronous tuning. Callbacks allow to customize the behavior of processes in mlr3tuning. The callback_async_tuning() function creates a CallbackAsyncTuning. Predefined callbacks are stored in the dictionary mlr_callbacks and can be retrieved with clbk(). For more information on tuning callbacks see callback_async_tuning().

Super classes

mlr3misc::Callback -> bbotk::CallbackAsync -> CallbackAsyncTuning

Public fields

on_eval_after_xs: (⁠function()⁠)
Stage called after xs is passed. Called in ObjectiveTuningAsync$eval().
on_resample_begin: (⁠function()⁠)
Stage called at the beginning of an evaluation. Called in workhorse() (internal).
on_resample_before_train: (⁠function()⁠)
Stage called before training the learner. Called in workhorse() (internal).
on_resample_before_predict: (⁠function()⁠)
Stage called before predicting. Called in workhorse() (internal).
on_resample_end: (⁠function()⁠)
Stage called at the end of an evaluation. Called in workhorse() (internal).
on_eval_after_resample: (⁠function()⁠)
Stage called after hyperparameter configurations are evaluated. Called in ObjectiveTuningAsync$eval().
on_eval_before_archive: (⁠function()⁠)
Stage called before performance values are written to the archive. Called in ObjectiveTuningAsync$eval().
on_tuning_result_begin: (⁠function()⁠)
Stage called before the results are written. Called in ⁠TuningInstance*$assign_result()⁠.