mlr3pipelines

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learner imputation can lead to unexpected behaviour

1

https://stackoverflow.com/q/73789223/8167262 This is caused by https://github.com/mlr-org/mlr3pipelines/blob/ed878ca735dc23e1f48cf4f6339a01b82b74c94d/R/PipeOpImputeLearner.R#L164 I don't fully understand the comment however. Maybe this should be documented better.

sebffischer

Issue templates

2

Was/is the org-wide template so bad that it must be removed/overriden? Feedback is always welcome... The current one essentially does nothing (including not helping users how to submit a "good"...

pat-s

e.g. `po("nop_1")` to create a `po("nop")` with ID `nop_1`.

mb706

e.g. postfix `_1` or something

mb706

double-arrow-operator that automatically avoids ID-clashes.

1

e.g. how about `%>>|%`

mb706

mb706

make single pipeop application easier

5

```r p = po("encode") task_preproc = p$train(list(task))[[1]] ```

mb706

options to (not) export hyperparameters

1

mb706

sebffischer

There are various implementations with [uwot](https://github.com/jlmelville/uwot) and [umap](https://github.com/tkonopka/umap) the most popular. uwot seems to be the more robust and popular implementation and also implemented in [tidymodels](https://embed.tidymodels.org/reference/step_umap.html) and also has a...

m-muecke