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The Agent Memory Learned to Revoke Itself
TEPA keeps superseded evidence for audit while removing it from the active retrieval set when the world changes.
Summary
TEPA keeps superseded evidence for audit while removing it from the active retrieval set when the world changes.
Append-only memory can keep obsolete facts alive after newer evidence contradicts them. TEPA gives each keyed precedent an explicit validity state, revokes older active precedents on conflict and preserves their history. In controlled reversal tests over 50 seeds, the authors report 0.950 accuracy for TEPA versus 0.210 for append-only and last-write-wins memory; similar results appeared in file-backed execution. The method handles single-hop validity, while the paper says multi-hop retrieval and long-context selection remain unresolved.
Why it matters
TEPA keeps superseded evidence for audit while removing it from the active retrieval set when the world changes.
Limits and context
- Append-only memory can keep obsolete facts alive after newer evidence contradicts them.
- In controlled reversal tests over 50 seeds, the authors report 0.950 accuracy for TEPA versus 0.210 for append-only and last-write-wins memory; similar results appeared in file-backed execution.
- The method handles single-hop validity, while the paper says multi-hop retrieval and long-context selection remain unresolved.
Key claims
TEPA keeps superseded evidence for audit while removing it from the active retrieval set when the world changes.
Qualification: Append-only memory can keep obsolete facts alive after newer evidence contradicts them.
Evidence: source-2026-08-10-016
Sources
- arXiv preprint 2608.07429arXiv · primary research
Corrections
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