A CallbackAsyncTuning accesses and modifies data during the optimization via the ContextAsyncTuning
.
See the section on active bindings for a list of modifiable objects.
See callback_async_tuning()
for a list of stages that access ContextAsyncTuning
.
Details
Changes to $instance
and $optimizer
in the stages executed on the workers are not reflected in the main process.
Super classes
mlr3misc::Context
-> bbotk::ContextAsync
-> ContextAsyncTuning
Active bindings
xs
(list())
The hyperparameter configuration currently evaluated. Contains the values on the learner scale i.e. transformations are applied.resample_result
(mlr3::BenchmarkResult)
The resample result of the hyperparameter configuration currently evaluated.aggregated_performance
(
list()
)
Aggregated performance scores and training time of the evaluated hyperparameter configuration. This list is passed to the archive. A callback can add additional elements which are also written to the archive.