ECR-000003 Explainability Summary

Instrument Versions

• Comparator v3.1.0 remains the frozen official measurement instrument.
• Comparator 3.2.0-explainability provides post hoc difference explanations only.

EXP-001 Difference Patterns

• 1276 explained differences.

EXP-002 Difference Patterns

• 1085 explained differences.

EXP-003 Difference Patterns

• 551 explained differences.

Stable Backbone Findings

• Explainability distinguishes backbone-preserving elaboration from material divergence.

Repeated Lexical Variance

• phrase_rewording: 27

Repeated Compression and Elaboration Patterns

• expanded_steps: 2
• compressed_steps: 3

Repeated Provider-Specific Patterns

• high: 66
• medium: 12

Repeated Constraint Placement Patterns

• same_constraint_different_field: 1

Recognition Versus Structural Recovery

• recognition_without_structural_effect: 40
• recognition_with_structural_import: 0

Domain Leakage Impact

• terminology_leakage_only: 28

Material Structural Divergences

• missing_edge: 384
• invented_edge: 19
• terminal_path_changed: 128
• loop_target_changed: 42
• branch_removed: 4

Unresolved Instrument Questions

• Role-boundary cases such as Evaluate vs Verify and Decide vs Terminate still require human review.
• Explainability inherits Comparator v3.1 ontology limitations and does not replace judgment.

Human Review Priorities

• high: 66
• medium: 12

What These Explanations Do Not Establish

• Explainability does not validate hypotheses.
• Explainability does not increase official agreement scores.
• Explainability does not replace Comparator v3.1.
• Explainability does not remove the need for human review.