Struct TasteSample 

pub struct TasteSample {
    pub theta: Vec<Vec<f64>>,
    pub tau: Vec<f64>,
    pub cuts: Vec<f64>,
}

One posterior draw of every latent.

Fields

theta: Vec<Vec<f64>>

Per-style weight vectors [k][d].

tau: Vec<f64>

Per-session keep/kill thresholds.

cuts: Vec<f64>

Ordered star cutpoints (n_stars − 1 of them).

Implementations

impl TasteSample

pub fn utility(&self, phi: &[f64], style: usize) -> f64

Utility of a standardized candidate under one style lens.

pub fn utility_mix(&self, phi: &[f64]) -> f64

Mixture utility u(φ) = max_k u_k(φ): a candidate is as good as its best style thinks it is. Reduces to u_0 at K = 1. This is the one utility every likelihood and ranking uses.

pub fn prob_prefers(&self, a: &[f64], b: &[f64]) -> f64

Probability this sample assigns to “a beats b”.

pub fn best_style(&self, phi: &[f64]) -> usize

Which style lens is this candidate’s best (its island).

pub fn loglik(&self, feedback: &Feedback, session: usize) -> f64

Log-likelihood this draw assigns to one standardized observation.

pub fn loglik_with( &self, feedback: &Feedback, session: usize, absent: &[usize], ) -> f64

Self::loglik, told which coordinates of the observation were imputed rather than measured — see FitSet::absent.

Trait Implementations

impl Clone for TasteSample

fn clone(&self) -> TasteSample

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TasteSample

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TasteSample

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for TasteSample

fn eq(&self, other: &TasteSample) -> 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 TasteSample

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 TasteSample