Struct Matrix 

pub struct Matrix {
    pub rows: usize,
    pub cols: usize,
    pub data: Vec<f64>,
}

A dense row-major matrix.

Fields

rows: usize

Number of rows.

cols: usize

Number of columns.

data: Vec<f64>

Row-major data.

Implementations

impl Matrix

pub fn new(rows: usize, cols: usize, data: Vec<f64>) -> SolverResult<Self>

Creates a new matrix from shape and data.

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

Creates a zero matrix.

pub fn eye(n: usize) -> Self

Creates an identity matrix.

pub fn get(&self, r: usize, c: usize) -> f64

Element access.

pub fn set(&mut self, r: usize, c: usize, v: f64)

Mutable element access.

pub fn transpose(&self) -> Self

Returns the transpose.

pub fn matmul(&self, other: &Matrix) -> SolverResult<Matrix>

Matrix multiplication: self * other.

pub fn frobenius_norm(&self) -> f64

Frobenius norm.

pub fn column_norms(&self) -> Vec<f64>

Column norms (L2 norm of each column).

pub fn normalize_columns(&mut self) -> Vec<f64>

Normalize columns in-place, returning the norms.

pub fn column(&self, c: usize) -> Vec<f64>

Extract a column as a vector.

pub fn svd_truncated( &self, rank: usize, ) -> SolverResult<(Matrix, Vec<f64>, Matrix)>

Truncated SVD via deflated power iteration.

Computes the top rank singular triplets one at a time, deflating the matrix after each. Returns (U, sigma, V) where U is m×k, sigma has k entries, V is n×k.

Trait Implementations

impl Clone for Matrix

fn clone(&self) -> Matrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Matrix

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

Formats the value using the given formatter.