polarities_for

cards.polarities_for(metric_ids, registry=None)

Look up the polarity string for each metric id, in order.

A small bridge between the card registry and the MCDA pipeline. The facade beam.mcda.run takes a list of polarity strings, one per column of the score matrix. Rather than hand-type that list (and risk mismatching what the metric card actually says), pass the metric ids through this helper and feed the result to run.

Parameters

Name	Type	Description	Default
metric_ids	Sequence[str]	Ordered list of metric ids matching the columns of the score matrix.	required
registry	Registry | None	Optional registry instance. Defaults to a fresh registry over the bundled metrics/ directory.	None

Returns

Type	Description
list of str	One polarity string per metric id, in the same order.

Examples

>>> from beam.cards import polarities_for
>>> polarities_for(["ari", "runtime"])
['higher_is_better', 'lower_is_better']