Struct RandomUnderSampler

pub struct RandomUnderSampler { /* private fields */ }

Random Under-sampling strategy

Reduces the majority class by randomly removing samples until the desired class balance is achieved.

Implementations

impl RandomUnderSampler

pub fn new() -> Self

Create a new RandomUnderSampler with auto balancing

pub fn with_ratio(ratio: f64) -> Self

Create with specific ratio (0.0 to 1.0)

pub fn with_targets(targets: HashMap<i32, usize>) -> Self

Create with specific target counts

Trait Implementations

impl Clone for RandomUnderSampler

fn clone(&self) -> RandomUnderSampler

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RandomUnderSampler

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

Formats the value using the given formatter.

impl Default for RandomUnderSampler

fn default() -> Self

Returns the “default value” for a type.

impl ResamplingStrategy for RandomUnderSampler

type Input = ()

Input data type

type Output = (ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>, ArrayBase<OwnedRepr<i32>, Dim<[usize; 1]>>)

Output data type

type Config = RandomUnderSamplerConfig

Configuration type for this strategy

fn resample( &self, x: ArrayView2<'_, f64>, y: ArrayView1<'_, i32>, config: &Self::Config, ) -> Result<(Array2<f64>, Array1<i32>), ResamplingError>

Resample the input data to balance class distribution

fn performance_hints(&self) -> PerformanceHints

Consciousness-aligned performance hints