Enum Sketch 

pub enum Sketch {
    PowerIteration {
        iterations: usize,
    },
    BlockKrylov {
        blocks: usize,
    },
}

The sketching strategy.

Variants

PowerIteration

Y = (A·Aᵀ)^q·A·Ω, keeping only the final block.

Basis width is rank + oversamples.

Fields

iterations: usize

BlockKrylov

K = [A·Ω, (A·Aᵀ)A·Ω, …, (A·Aᵀ)^(b-1)·A·Ω], keeping every block.

Basis width is blocks · (rank + oversamples), so memory scales with blocks. Two to four blocks is usually the sweet spot.

Fields

blocks: usize

Trait Implementations

impl Clone for Sketch

fn clone(&self) -> Sketch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Sketch

impl Debug for Sketch

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

Formats the value using the given formatter.

impl Default for Sketch

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Sketch

impl PartialEq for Sketch

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Sketch