Learn R Programming
bbotk (version 1.7.1)

Archive: Data Storage

Description

The Archive class stores all evaluated points and performance scores

Arguments

Public fields

search_space

(paradox::ParamSet)
Specification of the search space for the Optimizer.

codomain

(Codomain)
Codomain of objective function.

start_time

(POSIXct)
Time stamp of when the optimization started. The time is set by the Optimizer.

check_values

(logical(1))
Determines if points and results are checked for validity.

Active bindings

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().

cols_x

(character())
Column names of search space parameters.

cols_y

(character())
Column names of codomain target parameters.

Methods

Method new()

Creates a new instance of this R6 class.

Usage

Archive$new(
  search_space,
  codomain,
  check_values = FALSE,
  label = NA_character_,
  man = NA_character_
)

Arguments

search_space

(paradox::ParamSet)
Specifies the search space for the Optimizer. The paradox::ParamSet describes either a subset of the domain of the Objective or it describes a set of parameters together with a trafo function that transforms values from the search space to values of the domain. Depending on the context, this value defaults to the domain of the objective.

codomain

(paradox::ParamSet)
Specifies codomain of function. Most importantly the tags of each output "Parameter" define whether it should be minimized or maximized. The default is to minimize each component.

check_values

(logical(1))
Should x-values that are added to the archive be checked for validity? Search space that is logged into archive.

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().

Method format()

Helper for print outputs.

Usage

Archive$format(...)

Arguments

...

(ignored).

Method print()

Printer.

Usage

Archive$print()

Arguments

...

(ignored).

Method clear()

Clear all evaluation results from archive.

Usage

Archive$clear()

Method help()

Opens the corresponding help page referenced by field $man.

Usage

Archive$help()

Method clone()

The objects of this class are cloneable with this method.

Usage

Archive$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Details

The Archive is an abstract class that implements the base functionality each archive must provide.

See Also

ArchiveBatch, ArchiveAsync