Struct FittedLabelEncoder 

pub struct FittedLabelEncoder { /* private fields */ }

A fitted label encoder holding the bidirectional label-to-index mapping.

Created by calling Fit::fit on a LabelEncoder.

Implementations

impl FittedLabelEncoder

pub fn classes(&self) -> &[String]

Return the ordered list of class labels.

classes[i] is the label corresponding to integer i.

pub fn n_classes(&self) -> usize

Return the number of unique classes.

pub fn inverse_transform( &self, y: &Array1<usize>, ) -> Result<Array1<String>, FerroError>

Map integer indices back to the original string labels.

Errors

Returns FerroError::InvalidParameter if any index is out of range.

Trait Implementations

impl Clone for FittedLabelEncoder

fn clone(&self) -> FittedLabelEncoder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FittedLabelEncoder

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

Formats the value using the given formatter.

impl Transform<ArrayBase<OwnedRepr<String>, Dim<[usize; 1]>>> for FittedLabelEncoder

fn transform(&self, x: &Array1<String>) -> Result<Array1<usize>, FerroError>

Transform string labels to integer indices.

Errors

Returns FerroError::InvalidParameter if any label was not seen during fitting.

type Output = ArrayBase<OwnedRepr<usize>, Dim<[usize; 1]>>

The transformed output type.

type Error = FerroError

The error type returned by transform.