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    "story_id": "mp-2026-09-02-019",
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    "position": 21,
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    "section": "robotics",
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    "headline": "The Scene Graph Updated When the Room Changed",
    "slug": "the-scene-graph-updated-when-the-room-changed",
    "dek": "DSG detects moved objects before reasoning again about their spatial relationships.",
    "summary": "DSG detects moved objects before reasoning again about their spatial relationships.",
    "body_text": "Semantic 3D Gaussian rendering supplies dual views for change detection, updating graph nodes when an object no longer matches the remembered room. A language model then receives visual context at multiple scales to infer richer relations. Tests on DynTHOR, 3RScan and real scenes report better node construction and relationship reasoning than compared methods.",
    "why_it_matters": "DSG detects moved objects before reasoning again about their spatial relationships.",
    "limitations": [],
    "importance": 7,
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    "modified_at": "2026-09-02T09:00:00.000-04:00",
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    "tags": [
      "scene graphs",
      "3D Gaussian splatting",
      "dynamic rooms"
    ],
    "image_url": null,
    "corrections": []
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  "sources": [
    {
      "source_id": "source-2026-09-02-021",
      "title": "arXiv preprint 2609.00619",
      "publisher": "arXiv",
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
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    "title": "The Scene Graph Updated When the Room Changed",
    "publisher": "The Machine Press",
    "published_at": "2026-09-02T09:00:00.000-04:00",
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