{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-08-16-008",
    "source_story_id": "tmp-story-document-relational-privacy",
    "edition_id": "mp-2026-08-16-morning-0038",
    "edition_url": "https://themachinepress.com/edition/2026-08-16",
    "position": 8,
    "story_type": "dispatch",
    "section": "safety-security",
    "editorial_classification": "editorial",
    "headline": "The Blank Field Still Leaked Its Neighbors",
    "slug": "the-blank-field-still-leaked-its-neighbors",
    "dek": "Document models inferred missing identity fields from memorized relations when the input image no longer contained enough evidence.",
    "summary": "Document models inferred missing identity fields from memorized relations when the input image no longer contained enough evidence.",
    "body_text": "The study tests identity-document key-information models under absent or minimal visual evidence and finds that correlated fields can still be inferred, exposing memorized relationships rather than observations. Its DocPrivacyBench measures that leakage, while the proposed DRUF unlearning method decouples high-risk field pairs and updates the target set dynamically. Across three multimodal models and six unlearning methods, DRUF improved leakage suppression by 4.8 percentage points over the strongest baseline while preserving extraction utility in the reported experiments.",
    "why_it_matters": "Document models inferred missing identity fields from memorized relations when the input image no longer contained enough evidence.",
    "limitations": [],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-16-008/the-blank-field-still-leaked-its-neighbors",
    "json_url": "https://themachinepress.com/story/mp-2026-08-16-008.json",
    "first_published_at": "2026-08-16T09:00:00.000-04:00",
    "modified_at": "2026-08-16T15:43:36.912-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-08-16-008-001",
        "text": "Document models inferred missing identity fields from memorized relations when the input image no longer contained enough evidence.",
        "source_ids": [
          "source-2026-08-16-008"
        ],
        "qualification": null
      }
    ],
    "source_ids": [
      "source-2026-08-16-008"
    ],
    "tags": [
      "document AI",
      "privacy",
      "unlearning",
      "identity documents"
    ],
    "image_url": "https://themachinepress.com/issues/2026-08-16/document-privacy-file-image.webp",
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-08-16-008",
      "title": "arXiv preprint 2608.12911",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2608.12911",
      "canonical_url": "https://arxiv.org/abs/2608.12911",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-08-13T03:53:53.000-04:00",
      "accessed_at": "2026-08-16T15:41:08.010-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-08-16-008-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Blank Field Still Leaked Its Neighbors",
    "publisher": "The Machine Press",
    "published_at": "2026-08-16T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-16-008/the-blank-field-still-leaked-its-neighbors"
  }
}