Enum StabilizationKind 

pub enum StabilizationKind {
    None,
    SolverDampingOnly,
    NumericalPerturbation,
    ApproximationOnly,
    ObjectiveStabilization,
    ExplicitPrior,
}

Semantically distinct flavours a ridge δ can have.

Variants

None

SolverDampingOnly

LM/TR damping. NEVER enters the objective, gradient, logdet, Hessian, or any saved model artifact. Lives only inside the trust-region step.

NumericalPerturbation

Added strictly so a linear solve succeeds. The objective/Hessian the caller sees is unchanged; the perturbation is a property of the solver, not the model. Its optional backward-error bound lives on the enclosing ledger.

ApproximationOnly

An explicit part of a downstream approximation, not of the fitted model. Unlike NumericalPerturbation, consumers must not report the result as if the unperturbed estimand had been evaluated.

ObjectiveStabilization

Algorithm-selected ridge consistently included in the fitted objective. The ledger’s objective policy preserves determinant provenance.

ExplicitPrior

Part of the model. Enters quadratic, log normalizer, Hessian, serialization, and user-visible summaries.

Trait Implementations

impl Clone for StabilizationKind

fn clone(&self) -> StabilizationKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StabilizationKind

impl Debug for StabilizationKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StabilizationKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for StabilizationKind

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for StabilizationKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StabilizationKind