Struct SparseRandomProjection 

pub struct SparseRandomProjection {
    pub components: Array2<f64>,
    pub n_components: usize,
    pub n_features_in: usize,
    pub density: f64,
    pub seed: u64,
}

SparseRandomProjection — Achlioptas (2003). Entries take one of {-√(s/k), 0, +√(s/k)} with probabilities {1/2s, 1 − 1/s, 1/2s}.

Fields

components: Array2<f64>

Projection matrix R.

n_components: usize

Kept rank.

n_features_in: usize

Input dimension.

density: f64

Density 1/s (fraction of non-zero entries).

seed: u64

Seed used at fit.

Implementations

impl SparseRandomProjection

pub fn fit( x: ArrayView2<'_, f64>, n_components: usize, seed: u64, ) -> Result<Self>

Fit with density = 1/sqrt(n_features) (the reference default).

pub fn fit_with( x: ArrayView2<'_, f64>, n_components: usize, density: f64, seed: u64, ) -> Result<Self>

Full-configuration fit.

pub fn transform(&self, x: ArrayView2<'_, f64>) -> Result<Array2<f64>>

Transform.

Trait Implementations

impl Clone for SparseRandomProjection

fn clone(&self) -> SparseRandomProjection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseRandomProjection

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SparseRandomProjection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for SparseRandomProjection

fn eq(&self, other: &SparseRandomProjection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for SparseRandomProjection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SparseRandomProjection