Struct Isomap 

pub struct Isomap { /* private fields */ }

Isomap (Isometric Feature Mapping) dimensionality reduction

Isomap seeks a lower-dimensional embedding that maintains geodesic distances between all points. It uses graph distances to approximate geodesic distances on the manifold.

Implementations

impl Isomap

pub fn new(n_neighbors: usize, ncomponents: usize) -> Self

Creates a new Isomap instance

Arguments

• n_neighbors - Number of neighbors for graph construction
• n_components - Number of dimensions in the embedding space

pub fn with_epsilon(self, epsilon: f64) -> Self

Use epsilon-ball instead of k-nearest neighbors

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

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

Fits the Isomap 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 Isomap model

For new points, this uses the Landmark MDS approach

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 Isomap model and transforms the data

Arguments

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

Returns

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

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

Returns the embedding

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

Returns the geodesic distances computed during fitting

Trait Implementations

impl Clone for Isomap

fn clone(&self) -> Isomap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Isomap

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

Formats the value using the given formatter.