Struct FederatedMetadata 

pub struct FederatedMetadata {
    pub pos_category_ids: HashMap<ImageId, HashSet<CategoryId>>,
    pub neg_category_ids: HashMap<ImageId, HashSet<CategoryId>>,
    pub not_exhaustive_category_ids: HashMap<ImageId, HashSet<CategoryId>>,
    pub category_frequency: HashMap<CategoryId, Frequency>,
}

LVIS federated metadata bundle (ADR-0026). Carried as a single Option on CocoDataset because the four fields are all populated together by CocoDataset::from_lvis_json_bytes and all None after the COCO loader path. Storing one optional struct (rather than four separate Option<...> fields) reflects the all-or-none semantics and lets the orchestrator gate federated branches on a single is_some() check.

Fields

pos_category_ids: HashMap<ImageId, HashSet<CategoryId>>

Per-image positive-category set, derived from GT annotations at load (quirk AA1, not a JSON field).

neg_category_ids: HashMap<ImageId, HashSet<CategoryId>>

Per-image negative-category set, read verbatim from the JSON (quirk AA2).

not_exhaustive_category_ids: HashMap<ImageId, HashSet<CategoryId>>

Per-image not-exhaustive-category set, read verbatim from the JSON (quirk AA3).

category_frequency: HashMap<CategoryId, Frequency>

Per-category frequency tag (quirk AB1). Required on every category by from_lvis_json_bytes; missing entries raise EvalError::MissingFrequency at load (quirk AB6 corrected).

Trait Implementations

impl Clone for FederatedMetadata

fn clone(&self) -> FederatedMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FederatedMetadata

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

Formats the value using the given formatter.