lenskit.knn.association.AssociationConfig

class lenskit.knn.association.AssociationConfig

Bases: pydantic.BaseModel

Configuration options for AssociationScorer.

method: AssociationMethod = 'probability'

The formula to use for computing item association level.

damping: pydantic.NonNegativeFloat = 0.0

Damping factor (\(\kappa\)) for biased lift.

max_nbrs: pydantic.PositiveInt | None = None

Maximum number of reference items used to score each target item. If None, items are scored by the mean of their score with respect to each reference item. If a positive integer \(n\), then only the \(n\) most-related reference items are used. \(n=1\) is equivalent to using only the maximum relatedness.