Is custom resampling with AutoTuner supported? #207
Description
I am using a custom resampling within the AutoTuner function.
I am getting back an error which I can't unfortunately understand.
Any idea?
task = tsk("pima")
set.seed(123)
resampling = rsmp("custom")
train_sets = list(1:300 , 332:632, 633:738)
test_sets = list(301:331, 633:663, 739:768)
resampling$instantiate(task, train_sets, test_sets)
learner = lrn("classif.rpart")
#resampling = rsmp("holdout")
measures = msr("classif.ce")
tune_ps = ParamSet$new(list(
ParamDbl$new("cp", lower = 0.001, upper = 0.1),
ParamInt$new("minsplit", lower = 1, upper = 10)
))
terminator = term("evals", n_evals = 10)
tuner = tnr("random_search")
at = AutoTuner$new(
learner = learner,
resampling = resampling,
measures = measures,
tune_ps = tune_ps,
terminator = terminator,
tuner = tuner
)
at
at$train(task)**Error in self$resampling$instantiate(self$task) :
Assertion on 'train_sets' failed: Must be of type 'list', not 'NULL'.**