Module model 

Structs

AxisSizeContract

AxisSpec

CoordinateSpec

Typed coordinate contract for an axis, so methods can machine-rely on the coordinate dtype, ordering and (for numeric) regular-grid structure rather than re-deriving them from untyped JSON.

DataView

DatasetSchema

FoldSpec

GroupSpec

MetadataFieldSpec

MetadataSchema

PresenceMask

RepresentationSpec

ShapeContract

SourceDescriptor

Enums

AxisKind

CoordinateDType

Element dtype of an axis coordinate sequence.

CoordinateValues

Axis coordinate values: either an explicit per-index list or a regular numeric grid (value(i) = start + i * step, count taken from the axis size).

GroupKind

MetadataValueKind

SignalKind

SourceGranularity

Functions

require_signal_type_match

Validate that a provider-declared actual signal type matches the expected one the plan or bundle records (ADR-06). The Unknown policy is the caller’s: pass allow_unknown = true at train time (an untagged signal type is tolerated) and false at predict time (a trained pipeline must carry a concrete signal type, so any difference — including Unknown — is refused).