Enum DecayModel 

pub enum DecayModel {
    Exponential,
    Hyperbolic,
    PowerLaw {
        half_life_days: f64,
    },
    None,
}

How salience decays over time.

Variants

Exponential

salience * exp(-age * ln2 / half_life)

This is the original formula; it is the default.

Hyperbolic

salience / (1 + decay_factor * age_days)

PowerLaw

salience * half_life / (half_life + age_days)

Fields

half_life_days: f64

Override half-life (days) for the power-law model. Falls back to RecallConfig.temporal_half_life_days when absent.

None

No decay — salience is used as-is.

Implementations

impl DecayModel

pub fn apply( &self, salience: f64, age_days: f64, decay_factor: f64, half_life: f64, ) -> f64

Apply decay to a salience value.

• salience — raw importance in [0, 1]
• age_days — age of the note in days
• decay_factor— per-note decay rate stored on the note (used by Exponential and Hyperbolic)
• half_life — config half-life, used by Exponential (as formula half-life) and PowerLaw

Trait Implementations

impl Clone for DecayModel

fn clone(&self) -> DecayModel

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DecayModel

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DecayModel

fn default() -> DecayModel

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DecayModel

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DecayModel

fn eq(&self, other: &DecayModel) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for DecayModel

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DecayModel