Struct LDA 

pub struct LDA { /* private fields */ }

Linear Discriminant Analysis (LDA) for dimensionality reduction

LDA finds the directions that maximize the separation between classes.

Implementations

impl LDA

pub fn new(ncomponents: usize, solver: &str) -> Result<Self>

Creates a new LDA instance

Arguments

• n_components - Number of components to keep
• solver - The solver to use (‘svd’ or ‘eigen’)

Returns

• A new LDA instance

pub fn fit<S1, S2>( &mut self, x: &ArrayBase<S1, Ix2>, y: &ArrayBase<S2, Ix1>, ) -> Result<()>

where S1: Data, S2: Data, S1::Elem: Float + NumCast, S2::Elem: Copy + NumCast + Eq + Hash,

Fits the LDA model to the input data

Arguments

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

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 LDA 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<S1, S2>( &mut self, x: &ArrayBase<S1, Ix2>, y: &ArrayBase<S2, Ix1>, ) -> Result<Array2<f64>>

where S1: Data, S2: Data, S1::Elem: Float + NumCast, S2::Elem: Copy + NumCast + Eq + Hash,

Fits the LDA model to the input data and transforms it

Arguments

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

Returns

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

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

Returns the LDA components

Returns

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

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 LDA

fn clone(&self) -> LDA

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LDA

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

Formats the value using the given formatter.