Struct FittedFactorAnalysis 

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

A fitted Factor Analysis model.

Created by calling Fit::fit on a FactorAnalysis. Implements Transform<Array2<F>> to compute factor scores for new data.

Implementations

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

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

Loading matrix W, shape (n_features, n_components).

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

Noise variance vector ψ, shape (n_features,).

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

Per-feature mean learned during fitting.

pub fn n_iter(&self) -> usize

Number of EM iterations performed.

pub fn log_likelihood(&self) -> F

Final log-likelihood value.

Trait Implementations

impl<F: Clone> Clone for FittedFactorAnalysis<F>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<F: Debug> Debug for FittedFactorAnalysis<F>

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

Formats the value using the given formatter.

impl<F: Float + Send + Sync + 'static> FittedPipelineTransformer<F> for FittedFactorAnalysis<F>

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

Transform via the pipeline interface.

Errors

Propagates errors from Transform::transform.

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

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

Compute factor scores: E[Z | X] = Σ_z W^T Ψ⁻¹ (X - μ)^T.

Returns an array of shape (n_samples, n_components).

Errors

Returns FerroError::ShapeMismatch if the number of columns in x does not match the model.

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

The transformed output type.

type Error = FerroError

The error type returned by transform.