Subclass for grid search tuning.
The grid is constructed as a Cartesian product over discretized values per parameter,
see paradox::generate_design_grid().
The points of the grid are evaluated in a random order.
In order to support general termination criteria and parallelization,
we evaluate points in a batch-fashion of size batch_size.
Larger batches mean we can parallelize more, smaller batches imply a more fine-grained checking
of termination criteria.
R6::R6Class object inheriting from Tuner.
TunerGridSearch$new()
tnr("grid_search")
resolution :: integer(1)
Resolution of the grid, see paradox::generate_design_grid().
param_resolutions :: named integer()
Resolution per parameter, named by parameter ID, see paradox::generate_design_grid().
batch_size :: integer(1)
Maximum number of configurations to try in a batch.
Other Tuner:
Tuner,
mlr_tuners_design_points,
mlr_tuners_gensa,
mlr_tuners_random_search,
mlr_tuners
# see ?Tuner