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bbotk 0.5.4

  • feat: Add OptimizerFocusSearch that peforms a focusing random search.

bbotk 0.5.3

CRAN release: 2022-05-04

  • feat: Optimizer and Terminator objects have the field $id now.

bbotk 0.5.2

CRAN release: 2022-04-04

  • refactor: The $print() method of OptimInstance omits unnecessary columns now.
  • fix: The $clear() method of OptimInstance raised an error.
  • fix: The $clear() method of Archive missed to reset the $start_time field.
  • feat: Optimizer and Terminator objects have the optional field $label now.
  • feat: as.data.table() functions for objects of class Dictionary have been extended with additional columns.
  • feat: Add a as.data.table.DictionaryTerminator() function.

bbotk 0.5.1

CRAN release: 2022-02-25

  • fix: The return of the $.status() method of TerminatorRunTime and TerminatorClockTime was not in a consistent unit. The return is in seconds from now on.
  • fix: The number of evaluations was recorded as 0 in the log messages when the search space was empty.
  • feat: Add a as.data.table.DictionaryOptimizer() function.
  • feat: New $help() method which opens the manual page of an Optimizer.

bbotk 0.5.0

CRAN release: 2022-01-19

  • feat: Add $nds_selection() method to Archive.
  • feat: New Codomain class that allows extra parameters.
  • refactor: Objective values were automatically named. From now on, only unnamed returns of ObjectiveRFun are named.
  • fix: OptimInstance, Archive and Objective objects were not cloned properly.
  • refactor: The fields $param_classes, $properties and $packages of Optimizer objects are read-only now.
  • feat: The branin() function is exported now.

bbotk 0.4.0

CRAN release: 2021-09-13

  • feat: The search space and domain can now be empty.
  • feat: The budget of TerminatorEvals can now be changed depending on the dimension of the search space with the parameter k.
  • feat: Add bb_optimize() function.
  • feat: Add OptimizerIrace which calls irace::irace from the irace package.

bbotk 0.3.2

CRAN release: 2021-03-18

  • refactor: Internal changes.

bbotk 0.3.1

CRAN release: 2021-03-12

  • feat: Add $clear() method to OptimInstance to reset the instance.
  • refactor: Prettier $print() methods.
  • feat: Assertions on overlapping and reserved names in domain and codomain.

bbotk 0.3.0

CRAN release: 2021-01-23

  • feat: The check of points and results can now be disables with the check_values flag in OptimInstance, OptimInstanceSingleCrit, OptimInstanceMultiCrit, ObjectiveRFun and ObjectiveRFunDt.
  • refactor: The data.table within the Archive can now be accessed with $data.
  • refactor: The m parameter of Archive$best() is renamed to batch.
  • feat: New ArchiveBest class which only stores best scoring evaluation instead of all evaluations
  • refactor: The runtime is reduced when ObjectiveRFunDt is used with a domain without trafo.
  • fix: Add support for ParamUty in OptimizerDesignPoints.
  • feat: The start points for OptimizerCmaes and OptimizerNloptr can now be randomly created or from center of the search space.
  • feat: The $optimize() method supports progress bars via the package progressr.

bbotk 0.2.2

CRAN release: 2020-10-08

  • refactor: Remove dependency on orphaned package bibtex.
  • feat: Add OptimizerCmaes which calls adagio::pureCMAES from the adagio package.

bbotk 0.2.1

CRAN release: 2020-09-05

  • refactor: Compact in-memory representation of R6 objects to save space when saving mlr3 objects via saveRDS(), serialize() etc.
  • refactor: Warning and error messages when upstream package of Optimizer is not installed.

bbotk 0.2

  • First version of the Black-Box Optimization Toolkit