Local Search Acquisition Function Optimizer — AcqOptimizerLocalSearch • mlr3mbo

Local search acquisition function optimizer. Calls bbotk::local_search(). For the meaning of the control parameters, see bbotk::local_search_control(). The termination stops when the budget defined by the n_searches, n_steps, and n_neighs parameters is exhausted.

If skip_already_evaluated is TRUE (default) and the proposed candidate was already evaluated on the actual bbotk::OptimInstance, an error is raised so that the loop_function can propose a randomly sampled point instead.

Super class

AcqOptimizer -> AcqOptimizerLocalSearch

Public fields

state: (list())
Result of the last bbotk::local_search() call.

Active bindings

print_id: (character)
Id used when printing.
label: (character(1))
Label for this object. Can be used in tables, plot and text output instead of the ID.
man: (character(1))
String in the format [pkg]::[topic] pointing to a manual page for this object.

Methods

Inherited methods

`AcqOptimizerLocalSearch$new()`

Creates a new instance of this R6 class.

Usage

AcqOptimizerLocalSearch$new(acq_function = NULL)

Arguments

acq_function: (NULL | AcqFunction).

`AcqOptimizerLocalSearch$optimize()`

Optimize the acquisition function.

Usage

AcqOptimizerLocalSearch$optimize()

Returns

data.table::data.table() with 1 row per candidate.

`AcqOptimizerLocalSearch$reset()`

Reset the acquisition function optimizer.

Clears the state of the previous optimization run.

Usage

AcqOptimizerLocalSearch$reset()

`AcqOptimizerLocalSearch$clone()`

The objects of this class are cloneable with this method.

Usage

AcqOptimizerLocalSearch$clone(deep = FALSE)

Arguments

deep: Whether to make a deep clone.

Examples

acqo("local_search")
#> <AcqOptimizerLocalSearch>: (OptimizerLocalSearch)
#> * Parameters: skip_already_evaluated=TRUE, catch_errors=TRUE