Struct DiceCoefficient 

pub struct DiceCoefficient {
    pub threshold: f64,
    pub epsilon: f64,
}

Dice Coefficient metric (F1 Score variant for segmentation).

Dice = 2 * (Intersection) / (|A| + |B|) = 2TP / (2TP + FP + FN)

Often used in medical image segmentation. Range: [0, 1] where 1 is perfect overlap.

Fields

threshold: f64

Threshold for converting predictions to binary

epsilon: f64

Small epsilon to avoid division by zero

Trait Implementations

impl Clone for DiceCoefficient

fn clone(&self) -> DiceCoefficient

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DiceCoefficient

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

Formats the value using the given formatter.

impl Default for DiceCoefficient

fn default() -> Self

Returns the “default value” for a type.

impl Metric for DiceCoefficient

fn compute( &self, predictions: &ArrayView<'_, f64, Ix2>, targets: &ArrayView<'_, f64, Ix2>, ) -> TrainResult<f64>

Compute metric value.

fn name(&self) -> &str

Get metric name.

fn reset(&mut self)

Reset metric state (for stateful metrics).