Struct CharErrorRate 

pub struct CharErrorRate<B: Backend> { /* private fields */ }

Character error rate (CER) is defined as the edit distance (e.g. Levenshtein distance) between the predicted and reference character sequences, divided by the total number of characters in the reference. This metric is commonly used in tasks such as speech recognition, OCR, or text generation to quantify how closely the predicted output matches the ground truth at a character level.

Implementations

impl<B: Backend> CharErrorRate<B>

pub fn new() -> Self

Creates the metric.

pub fn with_pad_token(self, index: usize) -> Self

Sets the pad token.

Trait Implementations

impl<B: Clone + Backend> Clone for CharErrorRate<B>

fn clone(&self) -> CharErrorRate<B>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<B: Backend> Default for CharErrorRate<B>

fn default() -> Self

Returns the “default value” for a type.

impl<B: Backend> Metric for CharErrorRate<B>

The character error rate metric implementation.

type Input = CerInput<B>

The input type of the metric.

fn update( &mut self, input: &CerInput<B>, _metadata: &MetricMetadata, ) -> MetricEntry

Update the metric state and returns the current metric entry.

fn clear(&mut self)

Clear the metric state.

fn name(&self) -> MetricName

The parameterized name of the metric.

impl<B: Backend> Numeric for CharErrorRate<B>

The character error rate metric implementation.

fn value(&self) -> NumericEntry

Returns the numeric value of the metric.