Struct DecayModel 

pub struct DecayModel {
    pub id: TemporalId,
    pub label: String,
    pub initial_value: f64,
    pub current_value: f64,
    pub reference_time: DateTime<Utc>,
    pub decay_type: DecayType,
    pub floor: f64,
    pub last_calculated: DateTime<Utc>,
    pub tags: Vec<String>,
}

Models how value/relevance decays over time.

Fields

id: TemporalId

Unique identifier.

label: String

What this decay applies to.

initial_value: f64

Initial value (at t=0).

current_value: f64

Current calculated value.

reference_time: DateTime<Utc>

Reference time (when value was initial_value).

decay_type: DecayType

Decay function.

floor: f64

Minimum value (floor).

last_calculated: DateTime<Utc>

When last calculated.

tags: Vec<String>

Tags.

Implementations

impl DecayModel

pub fn new( label: impl Into<String>, initial_value: f64, decay_type: DecayType, ) -> Self

Create a new decay model.

pub fn calculate_value(&self, at: DateTime<Utc>) -> f64

Calculate value at a specific time.

pub fn update(&mut self)

Update current_value to now.

pub fn time_until(&self, threshold: f64) -> Option<ChronoDuration>

Time until value reaches threshold.

pub fn refresh(&mut self)

Reset decay (refresh the value back to initial).

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<'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 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.