Struct DenseInput 

pub struct DenseInput<'a, F: BixverseFloat> { /* private fields */ }

Dense, non-negative V wrapped behind the NMF trait. Validates non-negativity and finiteness once at construction.

Implementations

impl<'a, F: BixverseFloat> DenseInput<'a, F>

pub fn new(v: MatRef<'a, F>) -> Result<Self, MethodsErrors>

Construct a DenseInput from a borrowed matrix.

Validates that all entries are finite and non-negative, then computes ||V||_F^2.

Params

• v - The input matrix to factorise.

Returns

A DenseInput wrapping v.

Trait Implementations

impl<'a, F: Debug + BixverseFloat> Debug for DenseInput<'a, F>

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

Formats the value using the given formatter.

impl<F: BixverseFloat> NmfInput<F> for DenseInput<'_, F>

NmfInput trait implementation for DenseInput

fn shape(&self) -> (usize, usize)

Returns the shape

fn sq_frob(&self) -> F

The squared Frobenius norm ||V||_F^2,

fn wt_v(&self, w: MatRef<'_, F>, out: &mut Mat<F>)

Compute W^T V.

fn v_ht(&self, h: MatRef<'_, F>, out: &mut Mat<F>)

Gram matrix W^T W.

fn top_k_svd(&self, k: usize) -> Result<SvdResults<F>, MethodsErrors>

Top-k truncated SVD of V.