CallbackAsync {bbotk} | R Documentation |
Create Asynchronous Optimization Callback
Description
Specialized mlr3misc::Callback for asynchronous optimization.
Callbacks allow to customize the behavior of processes in bbotk.
The callback_async()
function creates a CallbackAsync.
Predefined callbacks are stored in the dictionary mlr_callbacks and can be retrieved with clbk()
.
For more information on optimization callbacks see callback_async()
.
Super class
mlr3misc::Callback
-> CallbackAsync
Public fields
on_optimization_begin
(
function()
)
Stage called at the beginning of the optimization in the main process. Called inOptimizer$optimize()
.on_worker_begin
(
function()
)
Stage called at the beginning of the optimization on the worker. Called in the worker loop.on_worker_end
(
function()
)
Stage called at the end of the optimization on the worker. Called in the worker loop.on_result
(
function()
)
Stage called after result are written. Called inOptimInstance$assign_result()
.on_optimization_end
(
function()
)
Stage called at the end of the optimization in the main process. Called inOptimizer$optimize()
.
Methods
Public methods
Inherited methods
Method clone()
The objects of this class are cloneable with this method.
Usage
CallbackAsync$clone(deep = FALSE)
Arguments
deep
Whether to make a deep clone.