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    "story_id": "mp-2026-09-02-011",
    "source_story_id": "tmp-story-hitmem-dynamic-memory",
    "edition_id": "mp-2026-09-02-morning-0055",
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    "position": 11,
    "story_type": "dispatch",
    "section": "robotics",
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    "headline": "The Robot Memory Learned Which Furniture Had Gone Stale",
    "slug": "the-robot-memory-learned-which-furniture-had-gone-stale",
    "dek": "HitMem decays old scene knowledge and narrows relocation searches with semantic, spatial and temporal context.",
    "summary": "HitMem decays old scene knowledge and narrows relocation searches with semantic, spatial and temporal context.",
    "body_text": "A lightweight topological graph records support relationships while continuous perception lowers the activity of stale memories. When an object has moved, a two-stage retriever combines another agent's trajectory constraints with class affinities to identify likely regions. On the authors' Dyna-THOR benchmark, the method improved relocation accuracy and reduced exploration cost; the paper also evaluates dynamic simulated environments rather than every real home.",
    "why_it_matters": "HitMem decays old scene knowledge and narrows relocation searches with semantic, spatial and temporal context.",
    "limitations": [],
    "importance": 8,
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    "first_published_at": "2026-09-02T09:00:00.000-04:00",
    "modified_at": "2026-09-02T09:00:00.000-04:00",
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    "tags": [
      "3D memory",
      "dynamic environments",
      "embodied agents"
    ],
    "image_url": null,
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  "sources": [
    {
      "source_id": "source-2026-09-02-011",
      "title": "arXiv preprint 2609.00950",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.00950",
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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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  "cite_this_report": {
    "title": "The Robot Memory Learned Which Furniture Had Gone Stale",
    "publisher": "The Machine Press",
    "published_at": "2026-09-02T09:00:00.000-04:00",
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