Marc Becker

PipeOpTargetTrafo drops missing factor levels

2

`PipeOpTargetTrafo` drops missing factor levels in task, whereas `mlr3` keeps the factor levels. ```r library(mlr3) library(mlr3pipelines) options(mlr3.debug = TRUE) task = tsk("boston_housing") learner = lrn("regr.rpart") ppl = ppl("targettrafo", graph =...

implement hotstart for learners

4

# Proposal When hotstarting, a learner reuses a previously fitted model while training e.g. adding trees to a random forest. `HotstartStack` stores trained learners which can be potentially used to...

Add show argument to bs_append.bsplus_accordion()

1

Hey, I added an argument to `bs_append.bsplus_accordion()`, which suppresses that the first panel of an accordion is always open. I need this for my https://github.com/be-marc/swdt project.

feat: add early stopping on test set

3

The test sets are added to the watchlist and early stopping is performed. ```r learner = lrn("classif.xgboost", early_stopping_rounds = 10, early_stopping_set = "test", nrounds = 100, eval_metric = "error") rr...

Connect learner h2o from package h2o

3

[CRAN](https://cran.r-project.org/web/packages/h2o/h2o.pdf)

ecr::evaluateFitness fails if package is not loaded

1

`ecr::evaluateFitness` fails if package is not loaded ``` objective_function = function(x) { sum(x) } ctrl = ecr::initECRControl(fitness.fun = objective_function, n.objectives = 1) population = ecr::initPopulation(mu = 10, gen.fun = ecr::genBin,...

Prepare for release: * [x] `git pull` * [x] Check [current CRAN check results](https://cran.rstudio.org/web/checks/check_results_mlr3.html) * [x] [Polish NEWS](https://style.tidyverse.org/news.html#news-release) * [x] `urlchecker::url_check()` * [x] `devtools::build_readme()` * [x] `devtools::check(remote = TRUE, manual...