[ENH] Add estimator details to html repr of estimators #7438
Open
Description
Currently, meta estimators (descendants of _HeterogenousMetaestimator) lack detailed information. An example from sklearn:
from sklearn.compose import ColumnTransformer
from sklearn.preprocessing import Normalizer
ct = ColumnTransformer(
[("norm1", Normalizer(norm='l1'), [0, 1]),
("norm2", Normalizer(norm='l1'), slice(2, 4))])
ct
In contrast, an example from sktime:
from sktime.transformations.compose import ColumnEnsembleTransformer
from sktime.transformations.series.boxcox import BoxCoxTransformer
from sktime.transformations.series.exponent import ExponentTransformer
params2 = {
"transformers": [("transformer1", ExponentTransformer(), [0])],
"remainder": BoxCoxTransformer(method="fixed"),
}
ct = ColumnEnsembleTransformer(**params2)
ct
As you can see there is no column names in ColumnEnsembleTransformer. The goal is to review other meta-estimators, override their default _sk_visual_block method and update name details based on appropriate estimator attribute.