Enum FisherFactorKind 

pub enum FisherFactorKind {
    ExactFull,
    CertifiedPsdLowerBound,
    UncertifiedApproximation,
}

Scientific status of a factored output-Fisher approximation.

This is independent of both factor rank and a scalar trace diagnostic. A zero estimated tail trace does not prove an exact factorization, and a positive tail estimate does not prove the retained operator is below the true Fisher in Loewner order (#2249).

Variants

ExactFull

The supplied factor exactly represents the complete local Fisher.

CertifiedPsdLowerBound

The producer certified 0 <= U U^T <= F as an operator inequality.

UncertifiedApproximation

Randomized, stochastic, truncated, or otherwise uncertified factor.

Implementations

impl FisherFactorKind

pub const fn tag(self) -> &'static str

Stable artifact/FFI tag. Factor status is part of the scientific data, not an inference a consumer may recreate from rank or trace metadata.

pub fn from_tag(tag: &str) -> Result<Self, String>

Parse the required public factor-status tag (#2249).

Trait Implementations

impl Clone for FisherFactorKind

fn clone(&self) -> FisherFactorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FisherFactorKind

impl Debug for FisherFactorKind

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

Formats the value using the given formatter.

impl Eq for FisherFactorKind

impl PartialEq for FisherFactorKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FisherFactorKind