{
  "id": 3519,
  "url": "https://arxiv.org/abs/2605.29630v1",
  "title": "Entity-Collision: A Stratified Protocol for Attributing Retrieval Lift in Agent Memory",
  "summary": "End-to-end agent-memory benchmarks report a single hit@k per retriever, confounding lexical leakage (uncontrolled query/gold/distractor entity overlap) with tag-mixing (preferences, services, tools averaged together). We propose entity-collision, a system-agnostic protocol that pins the BM25 floor by construction -- every distractor shares the answer's entity tokens -- and stratifies queries by discriminator tag, so any lift over BM25 is attributable to the embedder. Applied to an open-source ag",
  "authors": "Youwang Deng",
  "category": "research",
  "topics": "bias-fairness,agents-autonomy",
  "orgs": null,
  "regions": null,
  "published_at": "2026-05-28T09:02:48.000Z",
  "fetched_at": "2026-07-14T16:30:18.856Z",
  "source_slug": "arxiv-ethics",
  "source_name": "arXiv",
  "source_homepage": "https://arxiv.org",
  "ethics_ai_record_url": "https://ethics.ai/record/3519",
  "original_url": "https://arxiv.org/abs/2605.29630v1",
  "evidence_status": "source-only",
  "attribution": "via ethics.ai"
}