Struct MetricWithVariance 

pub struct MetricWithVariance {
    pub mean: f64,
    pub std_dev: f64,
    pub ci_95: f64,
    pub min: f64,
    pub max: f64,
    pub n: usize,
}

A metric with variance and confidence interval.

Tracks the mean, standard deviation, and 95% confidence interval for a metric computed across multiple samples/runs/datasets.

Example

use anno_eval::eval::MetricWithVariance;

let metric = MetricWithVariance::from_samples(&[0.85, 0.87, 0.82, 0.88, 0.84]);
println!("F1: {:.1}% ± {:.1}% (95% CI)", metric.mean * 100.0, metric.ci_95 * 100.0);
// F1: 85.2% ± 2.1% (95% CI)

Fields

mean: f64

Mean value of the metric

std_dev: f64

Standard deviation

ci_95: f64

95% confidence interval (±)

min: f64

Minimum observed value

max: f64

Maximum observed value

n: usize

Number of samples

Implementations

impl MetricWithVariance

pub fn from_samples(samples: &[f64]) -> Self

Create from a slice of sample values.

Uses sample standard deviation (Bessel’s correction) and t-distribution approximation for 95% CI.

pub fn format_with_ci(&self) -> String

Format as “mean ± ci95” string.

pub fn format_with_range(&self) -> String

Format as “mean (min-max)” string.

pub fn coefficient_of_variation(&self) -> f64

Get coefficient of variation (CV = std_dev / mean).

Trait Implementations

impl Clone for MetricWithVariance

fn clone(&self) -> MetricWithVariance

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MetricWithVariance

impl Debug for MetricWithVariance

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

Formats the value using the given formatter.

impl Default for MetricWithVariance

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MetricWithVariance

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MetricWithVariance

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

Formats the value using the given formatter.

impl PartialEq for MetricWithVariance

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

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 MetricWithVariance