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    "story_id": "mp-2026-10-31-004",
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    "headline": "Memory Becomes a Path Instead of a Search",
    "slug": "memory-becomes-a-path-instead-of-a-search",
    "dek": "A persistent local traversal head reached 0.95 mean return after 0.59 million training steps in a five-token MiniGrid test.",
    "summary": "A persistent local traversal head reached 0.95 mean return after 0.59 million training steps in a five-token MiniGrid test.",
    "body_text": "Long-context systems repeatedly search large stores from scratch, while recurrent compression must decide early what to keep. This proof of principle separates a memory's information value from its address and lets an agent traverse a persistent local neighborhood. On MiniGrid Memory with a five-token context, the local traversal head reached 0.95 mean return after 0.59 million training steps, compared with 0.94 million for Gaussian absolute addressing and more than 2 million for categorical addressing. The experiment used fixed geometry and did not test the paper's full learned-geometry or repeated-retrieval proposal.",
    "why_it_matters": "A persistent local traversal head reached 0.95 mean return after 0.59 million training steps in a five-token MiniGrid test.",
    "limitations": [
      "The experiment used fixed geometry and did not test the paper's full learned-geometry or repeated-retrieval proposal."
    ],
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    "first_published_at": "2026-10-31T09:00:00.000-04:00",
    "modified_at": "2026-10-31T09:00:00.000-04:00",
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        "text": "A persistent local traversal head reached 0.95 mean return after 0.59 million training steps in a five-token MiniGrid test.",
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        "qualification": "The experiment used fixed geometry and did not test the paper's full learned-geometry or repeated-retrieval proposal."
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    "tags": [
      "agent memory",
      "retrieval",
      "long context",
      "MiniGrid"
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  "sources": [
    {
      "source_id": "source-2026-10-31-004",
      "title": "arXiv preprint 2610.40545, original v1",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2610.40545v1",
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      "source_type": "primary_research",
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      "published_at": "2026-10-28T20:00:00.000-04:00",
      "accessed_at": "2026-10-31T08:25:01.279-04:00",
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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": "Memory Becomes a Path Instead of a Search",
    "publisher": "The Machine Press",
    "published_at": "2026-10-31T09:00:00.000-04:00",
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