Syntactic Sugar for Tuning Objects Construction

Functions to retrieve objects, set parameters and assign to fields in one go. Relies on mlr3misc::dictionary_sugar_get() to extract objects from the respective mlr3misc::Dictionary:

tnr() for a Tuner from mlr_tuners.
tnrs() for a list of Tuners from mlr_tuners.
trm() for a bbotk::Terminator from mlr_terminators.
trms() for a list of Terminators from mlr_terminators.

Usage

tnr(.key, ...)

tnrs(.keys, ...)

Arguments

.key: (character(1))
Key passed to the respective dictionary to retrieve the object.
...: (any)
Additional arguments.
.keys: (character())
Keys passed to the respective dictionary to retrieve multiple objects.

Value

R6::R6Class object of the respective type, or a list of R6::R6Class objects for the plural versions.

Examples

# random search tuner with batch size of 5
tnr("random_search", batch_size = 5)
#> <TunerBatchRandomSearch>: Random Search
#> * Parameters: batch_size=5
#> * Parameter classes: ParamLgl, ParamInt, ParamDbl, ParamFct
#> * Properties: dependencies, single-crit, multi-crit
#> * Packages: mlr3tuning, bbotk

# run time terminator with 20 seconds
trm("run_time", secs = 20)
#> <TerminatorRunTime>: Run Time
#> * Parameters: secs=20