mb706

check that we are using encapsulate for all pipeop (default) arguments and check functions

In many cases the objects in a graph have some kind of in-place option, and in fact we often explicitly clone objects to avoid this. It is necessary in general,...

E.g.: make `.result` part of the `$state`? -- has some drawbacks and does not work for predictions, and may be incompatible with states that are "closed" (i.e. pipeop does not...

... since using `ppl()` already makes it possible to change them. Instead of doing `ppl("bagging", frac = 0.5)`, one can already do `ppl("bagging", subsample.frac = 0.5)`, because of the way...

depends on https://github.com/mlr-org/mlr3filters/issues/154

* Add another function, e.g. `$operate()`, which uses the train_df() functions internally and accepts data.frame? (Should this set a state? Maybe `$operate(df, train = TRUE)`?) * Just have `$train()` and...

There should be another option besides `no_collapse_above_prevalence` which uses absolute count.