Struct TruncatedSVD 

pub struct TruncatedSVD { /* private fields */ }

Truncated Singular Value Decomposition (SVD) for dimensionality reduction

This transformer performs linear dimensionality reduction by means of truncated singular value decomposition (SVD). It works on any data and not just sparse matrices.

Implementations

impl TruncatedSVD

pub fn new(ncomponents: usize) -> Self

Creates a new TruncatedSVD instance

Arguments

• n_components - Number of components to keep

Returns

• A new TruncatedSVD instance

pub fn fit<S>(&mut self, x: &ArrayBase<S, Ix2>) -> Result<()>

where S: Data, S::Elem: Float + NumCast,

Fits the TruncatedSVD model to the input data

Arguments

• x - The input data, shape (n_samples, n_features)

Returns

• Result<()> - Ok if successful, Err otherwise

pub fn transform<S>(&self, x: &ArrayBase<S, Ix2>) -> Result<Array2<f64>>

where S: Data, S::Elem: Float + NumCast,

Transforms the input data using the fitted TruncatedSVD model

Arguments

• x - The input data, shape (n_samples, n_features)

Returns

• Result<Array2<f64>> - The transformed data, shape (n_samples, n_components)

pub fn fit_transform<S>(&mut self, x: &ArrayBase<S, Ix2>) -> Result<Array2<f64>>

where S: Data, S::Elem: Float + NumCast,

Fits the TruncatedSVD model to the input data and transforms it

Arguments

• x - The input data, shape (n_samples, n_features)

Returns

• Result<Array2<f64>> - The transformed data, shape (n_samples, n_components)

pub fn components(&self) -> Option<&Array2<f64>>

Returns the components (right singular vectors)

Returns

• Option<&Array2<f64>> - The components, shape (n_components, n_features)

pub fn singular_values(&self) -> Option<&Array1<f64>>

Returns the singular values

Returns

• Option<&Array1<f64>> - The singular values

pub fn explained_variance_ratio(&self) -> Option<&Array1<f64>>

Returns the explained variance ratio

Returns

• Option<&Array1<f64>> - The explained variance ratio

Trait Implementations

impl Clone for TruncatedSVD

fn clone(&self) -> TruncatedSVD

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TruncatedSVD

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

Formats the value using the given formatter.