CallbackFSelect | R Documentation |
Specialized bbotk::CallbackOptimization for feature selection.
Callbacks allow customizing the behavior of processes in mlr3fselect.
The callback_fselect()
function creates a CallbackFSelect.
Predefined callbacks are stored in the dictionary mlr_callbacks and can be retrieved with clbk()
.
For more information on callbacks see callback_fselect()
.
mlr3misc::Callback
-> bbotk::CallbackOptimization
-> CallbackFSelect
on_eval_after_design
(function()
)
Stage called after design is created.
Called in ObjectiveFSelect$eval_many()
.
on_eval_after_benchmark
(function()
)
Stage called after feature sets are evaluated.
Called in ObjectiveFSelect$eval_many()
.
on_eval_before_archive
(function()
)
Stage called before performance values are written to the archive.
Called in ObjectiveFSelect$eval_many()
.
clone()
The objects of this class are cloneable with this method.
CallbackFSelect$clone(deep = FALSE)
deep
Whether to make a deep clone.
# Write archive to disk callback_fselect("mlr3fselect.backup", on_optimization_end = function(callback, context) { saveRDS(context$instance$archive, "archive.rds") } )
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