lamindb.core.FeatureManager¶

class lamindb.core.FeatureManager(host)¶

Bases: object

Feature manager.

Class methods¶

classmethod filter(**expression)¶

Query artifacts by features.

classmethod get(**expression)¶

Query a single artifact by feature.

add_feature_set(feature_set, slot)¶

Curate artifact with a feature set.

Parameters:

feature_set (FeatureSet) – FeatureSet A feature set record.
slot (str) – str The slot that marks where the feature set is stored in the artifact.

Return type:

None

add_values(values, feature_field=FieldAttr(Feature.name), str_as_ulabel=True)¶

Curate artifact with features & values.

Parameters:

values (dict[str, str | int | float | bool]) – A dictionary of keys (features) & values (labels, numbers, booleans).
feature_field (DeferredAttribute, default: FieldAttr(Feature.name)) – The field of a reference registry to map keys of the dictionary.
str_as_ulabel (bool, default: True) – Whether to interpret string values as ulabels.

Return type:

None

get_values()¶

Get feature values as a dictionary.

make_external(feature)¶

Make a feature external, aka, remove feature from feature sets.

remove_values(feature, *, value=None)¶

Remove value annotations for a given feature.

Parameters:

feature (str | Feature) – The feature for which to remove values.
value (Any | None, default: None) – An optional value to restrict removal to a single value.