Struct FittedLDA 

pub struct FittedLDA<F> { /* private fields */ }

A fitted LDA model.

Created by calling Fit::fit on an LDA. Implements:

• Transform<Array2<F>> — project data onto discriminant axes.
• Predict<Array2<F>> — classify by nearest centroid in projected space.

Implementations

impl<F: Float + Send + Sync + 'static> FittedLDA<F>

pub fn scalings(&self) -> &Array2<F>

Projection (scalings) matrix, shape (n_features, n_components).

pub fn means(&self) -> &Array2<F>

Class centroids in the projected space, shape (n_classes, n_components).

pub fn explained_variance_ratio(&self) -> &Array1<F>

Explained-variance ratio per discriminant direction.

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

Sorted class labels as seen during fitting.

Trait Implementations

impl<F: Clone> Clone for FittedLDA<F>

fn clone(&self) -> FittedLDA<F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<F: Debug> Debug for FittedLDA<F>

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

Formats the value using the given formatter.

impl<F: Float + Send + Sync + 'static> Predict<ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>> for FittedLDA<F>

fn predict(&self, x: &Array2<F>) -> Result<Array1<usize>, FerroError>

Classify samples by nearest centroid in the projected space.

Errors

Returns FerroError::ShapeMismatch if the number of features does not match the model.

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

The prediction output type (e.g., ndarray::Array1<F> or ndarray::Array1<usize>).

type Error = FerroError

The error type returned by predict.

impl<F: Float + Send + Sync + 'static> Transform<ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>> for FittedLDA<F>

fn transform(&self, x: &Array2<F>) -> Result<Array2<F>, FerroError>

Project x onto the discriminant axes: X @ scalings.

Errors

Returns FerroError::ShapeMismatch if x.ncols() does not match the number of features seen during fitting.

type Output = ArrayBase<OwnedRepr<F>, Dim<[usize; 2]>>

The transformed output type.

type Error = FerroError

The error type returned by transform.