Interface DAGFingerprint

Map from directed edge bigram (opA ->[condShape] opB) to occurrence count.

Isomorphism-invariant 64-bit hex hash (16 hex chars) of the graph's WL node hashes, operator multiset, and edge bigrams. Two graphs with the same operator topology produce the exact same hash regardless of tempId naming or array ordering.

Per-node canonical operator signature, keyed by the node's tempId.

Map from canonical operator signature (Kind:Target...) to occurrence count.

Set of 2-hop transitive reachability pairs (opA ~> opB). Preserves structural alignment when one graph inserts an intermediate logging or validation step.

Map from Weisfeiler-Lehman subtree feature token (d0:..., d1:..., d2:...) to count.