Struct LogProbabilityScorer 

pub struct LogProbabilityScorer;

Interpret raw weights as probabilities and combine them in log space.

Trait Implementations

impl Clone for LogProbabilityScorer

fn clone(&self) -> LogProbabilityScorer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LogProbabilityScorer

impl Debug for LogProbabilityScorer

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

Formats the value using the given formatter.

impl Default for LogProbabilityScorer

fn default() -> LogProbabilityScorer

Returns the “default value” for a type.

impl WeightScorer for LogProbabilityScorer

fn zero(&self) -> f64

Score for an impossible derivation.

fn one(&self) -> f64

Score for an empty product.

fn rule_score(&self, weight: f64) -> f64

Convert one raw rule weight into this scorer’s representation.

fn times(&self, left: f64, right: f64) -> f64

Combine two scores along one derivation.

fn score_to_weight(&self, score: f64) -> f64

Convert a final score back to a conventional raw weight.

fn better(&self, candidate: f64, current: f64) -> bool

Return whether candidate is strictly better than current.