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recoverability

mnemo_core::query::retained

Function recoverability 

Source 
pub fn recoverability(age_hours: f64, access_count: u64) -> f32
Expand description

recency × retrieval-hit-rate — the v0 recoverability stand-in for EMBER’s learned retention score.

  • recency decays with a 1-week half-life: 0.5^(age / 168h), in (0, 1].
  • hit-rate is the smoothed access frequency (access + 1) / (access + 1 + 5), in (0, 1) — monotonically increasing in access_count, and non-zero even at access = 0.