Enum ObservabilityClass 

pub enum ObservabilityClass {
    PerJeDensity,
    RelationalGraph,
    Temporal,
    MemoryOnly,
}

In-principle observability class of an anomaly — which detection arm can, in principle, observe it. Grounds the routing/observability thesis (FINDINGS §12): different anomaly families surface to different signals, so a fair ML benchmark should report detection against the ceiling of the arm that can see each family, not a single pooled score. Assigned at injection time from the anomaly type via AnomalyType::observability_class; it is the primary observability (the arm most likely to surface the family first), not an exclusive claim.

Variants

PerJeDensity

Visible from a single journal entry’s own attributes — amount, round-dollar / threshold signatures, weekend / off-hours / post-close timing flags, account classification, balance. The per-JE density residual observes this family.

RelationalGraph

Visible only in the cross-entry account-flow graph — unusual account pairs, circular flows, counterparty nodes, network centrality, intercompany structure. The relational account-flow residual observes this family.

Temporal

Visible only in the cross-period time series — trend breaks, level shifts, seasonality, period-timing (wrong-period, backdating, cutoff), frequency bursts. A temporal arm observes this family.

MemoryOnly

Visible only with cross-period / cross-entity memory of prior occurrences — duplicate payments, recurring ghost employees, repeated shell-company payments. Needs audit-doctrine carry-forward (FINDINGS §40-41), not a single period’s manifold.

Implementations

impl ObservabilityClass

pub fn as_str(&self) -> &'static str

Stable snake_case label (matches the serialized form).

Trait Implementations

impl Clone for ObservabilityClass

fn clone(&self) -> ObservabilityClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ObservabilityClass

impl Debug for ObservabilityClass

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

Formats the value using the given formatter.

impl Default for ObservabilityClass

fn default() -> ObservabilityClass

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ObservabilityClass

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ObservabilityClass

impl Hash for ObservabilityClass

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ObservabilityClass

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ObservabilityClass

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 ObservabilityClass