CallbackAsync: Create Asynchronous Optimization Callback
In bbotk: Black-Box Optimization Toolkit

CallbackAsync

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 in Optimizer$optimize().
on_worker_begin: (⁠function()⁠)
Stage called at the beginning of the optimization on the worker. Called in the worker loop.
on_optimizer_before_eval: (⁠function()⁠)
Stage called after the optimizer proposes points. Called in OptimInstance$.eval_point().
on_optimizer_after_eval: (⁠function()⁠)
Stage called after points are evaluated. Called in OptimInstance$.eval_point().
on_worker_end: (⁠function()⁠)
Stage called at the end of the optimization on the worker. Called in the worker loop.
on_result_begin: (⁠function()⁠)
Stage called before the results are written. Called in OptimInstance$assign_result().
on_result_end: (⁠function()⁠)
Stage called after the results are written. Called in OptimInstance$assign_result().
on_optimization_end: (⁠function()⁠)
Stage called at the end of the optimization in the main process. Called in Optimizer$optimize().