Struct SparseCSR 

pub struct SparseCSR {
    pub shape: (usize, usize),
    pub row_ptr: Vec<usize>,
    pub col_indices: Vec<usize>,
    pub values: Vec<f64>,
}

Sparse matrix in CSR (Compressed Sparse Row) format.

Storage: O(nnz) where nnz is the number of non-zero elements Row access: O(1) Column access: O(nnz)

Fields

shape: (usize, usize)

Shape of the matrix (rows, cols)

row_ptr: Vec<usize>

Row pointers (length = rows + 1)

col_indices: Vec<usize>

Column indices for each non-zero entry

values: Vec<f64>

Values for each non-zero entry

Implementations

impl SparseCSR

pub fn new(rows: usize, cols: usize) -> Self

Create a new empty CSR matrix.

pub fn nnz(&self) -> usize

Get the number of non-zero elements.

pub fn sparsity_ratio(&self) -> f64

Get sparsity ratio (fraction of zero elements).

pub fn row(&self, row_idx: usize) -> Result<Vec<(usize, f64)>, SparseError>

Get a row slice.

pub fn multiply_dense(&self, vec: &[f64]) -> Result<Vec<f64>, SparseError>

Multiply with a dense vector (matrix-vector multiplication).

pub fn transpose(&self) -> SparseCSC

Transpose to CSC format.

pub fn memory_bytes(&self) -> usize

Get memory usage in bytes.

pub fn validate(&self) -> Result<(), SparseError>

Validate the CSR structure.

Trait Implementations

impl Clone for SparseCSR

fn clone(&self) -> SparseCSR

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparseCSR

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SparseCSR

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for SparseCSR

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for SparseCSR

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 SparseCSR