Mnemosyne.ValueFunction behaviour (mnemosyne v0.4.0)

Behaviour for scoring memory nodes during retrieval.

Implementations combine raw cosine relevance with node metadata (recency, frequency, reward) to produce a final score.

Summary

Returns the hourly decay rate for the default 90-day recency half-life.

@callback score(
  relevance :: float(),
  node :: struct(),
  metadata :: map() | nil,
  params :: map()
) :: float()

@spec default_recency_lambda() :: float()

Returns the hourly decay rate for the default 90-day recency half-life.