Struct DecayWeights 

pub struct DecayWeights {
    pub similarity: f64,
    pub recency: f64,
    pub importance: f64,
    pub recency_half_life: Duration,
}

Weights and half-life of the long-term ranking formula.

Fields

similarity: f64

Weight of semantic similarity.

recency: f64

Weight of recency.

importance: f64

Weight of importance.

recency_half_life: Duration

Age at which the recency term is 0.5.

Implementations

impl DecayWeights

pub fn new() -> Self

Creates weights with the default 0.7 / 0.15 / 0.15 mix and a 7-day half-life.

pub fn with_weights( self, similarity: f64, recency: f64, importance: f64, ) -> Self

Sets all three mix weights (need not sum to 1; the score is a plain weighted sum).

pub fn with_half_life(self, half_life: Duration) -> Self

Sets the recency half-life.

pub fn score(&self, similarity: f64, importance: f64, age: Duration) -> f64

Pure ranking score. age is time since last access; similarity/importance are in [0, 1].

Trait Implementations

impl Clone for DecayWeights

fn clone(&self) -> DecayWeights

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DecayWeights

impl Debug for DecayWeights

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

Formats the value using the given formatter.

impl Default for DecayWeights

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for DecayWeights

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DecayWeights