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featurebyte.Feature.cd.key_with_lowest_value

key_with_lowest_value( ) -> Feature

Description

Retrieves the key with the lowest value in the Cross Aggregate feature. When there are ties, the lexicographically smallest key is returned.

Returns

  • Feature
    A new feature object.

Examples

Create a new feature by retrieving the key with the lowest value of the dictionary feature:

>>> counts = catalog.get_feature("CustomerProductGroupTotalCost_7d")
>>> new_feature = counts.cd.key_with_lowest_value()
>>> new_feature.name = "CustomerProductGroupWithLowestTotalCost_7d"
Preview the features:

>>> features = fb.FeatureGroup([counts, new_feature])
>>> df = features.preview(
...     pd.DataFrame([
...         {
...             "POINT_IN_TIME": "2022-04-15 10:00:00",
...             "GROCERYCUSTOMERGUID": "2f4c1578-29d6-44b7-83da-7c5bfb981fa0",
...         }
...     ])
... )

Dictionary feature:

>>> df["CustomerProductGroupTotalCost_7d"].iloc[0]
{'Chips et Tortillas': 2.0, 'Colas, Thés glacés et Sodas': 10.0, 'Crèmes et Chantilly': 0.75, 'Pains': 1.09, 'Œufs': 1.19}
New feature:

>>> df["CustomerProductGroupWithLowestTotalCost_7d"].iloc[0]
'Crèmes et Chantilly'