Graph generation quality benchmark

[MaximilianRau04]

Description

The knowledge graph is only useful if the relationships it surfaces between documents, parties, and clauses are actually correct.

Proposed Solution

Build a benchmark comparing generated graph structure (nodes/edges) against a labeled ground-truth graph for a set of sample documents.

Acceptance Criteria

• Ground-truth graph exists for a set of sample documents
• Benchmark compares generated nodes/edges against ground truth
• Benchmark reports precision/recall on relationships, not just node presence
• Results are reproducible and comparable across runs