Struct CPDecomposition 

pub struct CPDecomposition {
    pub weights: Vec<f64>,
    pub factors: Vec<Vec<f64>>,
    pub shape: Vec<usize>,
    pub rank: usize,
}

CP decomposition result

Fields

weights: Vec<f64>

Weights λ_r

factors: Vec<Vec<f64>>

Factor matrices A_k[n_k × R]

shape: Vec<usize>

Original shape

rank: usize

Rank R

Implementations

impl CPDecomposition

pub fn als(tensor: &DenseTensor, config: &CPConfig) -> Self

Compute CP decomposition using ALS (Alternating Least Squares)

pub fn to_dense(&self) -> DenseTensor

Reconstruct tensor

pub fn eval(&self, indices: &[usize]) -> f64

Evaluate at specific index efficiently

pub fn storage(&self) -> usize

Storage size

pub fn compression_ratio(&self) -> f64

Compression ratio

pub fn relative_error(&self, tensor: &DenseTensor) -> f64

Fit error (relative Frobenius norm)

Trait Implementations

impl Clone for CPDecomposition

fn clone(&self) -> CPDecomposition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CPDecomposition

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

Formats the value using the given formatter.