Struct SparseMatrix 

pub struct SparseMatrix {
    pub nrows: usize,
    pub ncols: usize,
    pub format: SparseFormat,
    pub data: SparseData,
}

Sparse matrix representation for polynomial features SparseMatrix

Fields

nrows: usize

Number of rows

ncols: usize

Number of columns

format: SparseFormat

Storage format

data: SparseData

Data storage - interpretation depends on format

Implementations

impl SparseMatrix

pub fn new(nrows: usize, ncols: usize, format: SparseFormat) -> Self

Create a new sparse matrix

pub fn insert(&mut self, row: usize, col: usize, value: Float)

Insert a value at (row, col)

pub fn to_dok(&mut self)

Convert to DOK format

pub fn to_csr(&mut self)

Convert to CSR format

pub fn get(&self, row: usize, col: usize) -> Float

Get value at (row, col)

pub fn to_dense(&self) -> Array2<Float>

Convert to dense matrix

pub fn nnz(&self) -> usize

Get number of non-zero elements

pub fn apply_sparsity(&mut self, strategy: &SparsityStrategy)

Apply sparsity threshold

Trait Implementations

impl Clone for SparseMatrix

fn clone(&self) -> SparseMatrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseMatrix

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

Formats the value using the given formatter.