Difference Cause Rules

Allowed primary causes:

• lexical_variance
• provider_style
• representation_format
• abstraction_level
• compression
• elaboration
• schema_placement
• domain_semantics
• prior_knowledge_leakage
• structural_inference
• genuine_structural_divergence
• comparator_limit
• packet_ambiguity
• insufficient_information
• unclear

Each difference record includes:

• primary cause
• optional secondary cause
• rationale
• evidence references
• classification confidence

Confidence values:

• high
• medium
• low

Rules are heuristic. They explain likely drivers of disagreement and do not replace human review.