Struct TuckerDecomposition 

pub struct TuckerDecomposition {
    pub core: Tensor,
    pub factors: Vec<Matrix>,
}

Tucker decomposition result.

Represents a tensor as a core tensor multiplied by factor matrices: X ≈ G ×_1 U^(1) ×_2 U^(2) ... ×_N U^(N)

Fields

core: Tensor

Core tensor with shape [R_1, R_2, ..., R_N].

factors: Vec<Matrix>

Factor matrices, one per mode. Factor[n] is I_n × R_n.

Implementations

impl TuckerDecomposition

pub fn reconstruct(&self) -> SolverResult<Tensor>

Reconstructs the full tensor from the Tucker factors.

pub fn fit_error(&self, original: &Tensor) -> SolverResult<f64>

Computes the relative fit error: ||X - X_hat|| / ||X||.

pub fn compression_ratio(&self, original_shape: &[usize]) -> f64

Compression ratio: original elements / decomposition elements.

Trait Implementations

impl Clone for TuckerDecomposition

fn clone(&self) -> TuckerDecomposition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TuckerDecomposition

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

Formats the value using the given formatter.