Struct PredefinedSplit 

pub struct PredefinedSplit { /* private fields */ }

Predefined Split cross-validator

Uses user-provided split indices to generate train/test splits. This is useful when you have a specific validation strategy or when cross-validation folds are predefined by the problem.

Implementations

impl PredefinedSplit

pub fn new(test_fold: Array1<i32>) -> Self

Create a new PredefinedSplit cross-validator

Arguments

• test_fold - Array where test_fold[i] is the fold number for sample i. A value of -1 indicates that the sample should always be in the training set.

Trait Implementations

impl Clone for PredefinedSplit

fn clone(&self) -> PredefinedSplit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl CrossValidator for PredefinedSplit

fn n_splits(&self) -> usize

Returns the number of splits

fn split( &self, n_samples: usize, _y: Option<&Array1<i32>>, ) -> Vec<(Vec<usize>, Vec<usize>)>

Generate train/test indices for cross-validation

impl Debug for PredefinedSplit

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

Formats the value using the given formatter.