Abstract Optimizer class that implements the base functionality each Optimizer subclass must provide.
A Optimizer object describes the optimization strategy.
A Optimizer object must write its result to the $assign_result() method of the OptimInstance at the end in order to store the best point and its estimated performance vector.
$optimize() supports progress bars via the package progressr
combined with a Terminator. Simply wrap the function in
progressr::with_progress() to enable them. We recommend to use package
progress as backend; enable with progressr::handlers("progress").
param_setparadox::ParamSet Set of control parameters.
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.
The referenced help package can be opened via method $help().
param_classes(character())
Supported parameter classes that the optimizer can optimize.
Subclasses of paradox::Param.
properties(character())
Set of properties of the optimizer.
Must be a subset of mlr_reflections$optimizer_properties.
packages(character())
Set of required packages.
A warning is signaled by the constructor if at least one of the packages is not installed, but loaded (not attached) later on-demand via requireNamespace().
new()Creates a new instance of this R6 class.
Optimizer$new( param_set, param_classes, properties, packages = character(), label = NA_character_, man = NA_character_ )
param_set(paradox::ParamSet) Set of control parameters.
param_classes(character())
Supported parameter classes that the optimizer can optimize.
Subclasses of paradox::Param.
properties(character())
Set of properties of the optimizer.
Must be a subset of mlr_reflections$optimizer_properties.
packages(character())
Set of required packages.
A warning is signaled by the constructor if at least one of the packages is not installed, but loaded (not attached) later on-demand via requireNamespace().
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.
The referenced help package can be opened via method $help().
format()Helper for print outputs.
Optimizer$format()
print()Print method.
Optimizer$print()
(character()).
help()Opens the corresponding help page referenced by field $man.
Optimizer$help()
optimize()Performs the optimization and writes optimization result into OptimInstance. The optimization result is returned but the complete optimization path is stored in Archive of OptimInstance.
Optimizer$optimize(inst)
instclone()The objects of this class are cloneable with this method.
Optimizer$clone(deep = FALSE)
deepWhether to make a deep clone.