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  "story": {
    "story_id": "mp-2026-10-04-010",
    "source_story_id": "tmp-story-echo-k-feature-acquisition",
    "edition_id": "mp-2026-10-04-morning-0087",
    "edition_url": "https://themachinepress.com/edition/2026-10-04",
    "position": 10,
    "story_type": "dispatch",
    "section": "research",
    "editorial_classification": "editorial",
    "headline": "The Model Learned Which Measurement Was Worth Buying",
    "slug": "the-model-learned-which-measurement-was-worth-buying",
    "dek": "ECHO-k chooses additional modalities from internal representations when the eventual prediction task is unknown.",
    "summary": "ECHO-k chooses additional modalities from internal representations when the eventual prediction task is unknown.",
    "body_text": "Collecting every available modality can be expensive or slow. ECHO-k uses a pretrained model’s internal representations as proxy targets for cross-modal information, then learns a policy that acquires measurements sequentially. The authors provide guarantees in a stylized linear setting and report improved budgeted downstream performance across several foundation-model backends against task-agnostic, label-free baselines. The theory’s restricted setting and the evaluated budgets matter; the work does not establish that omitted measurements are always dispensable.",
    "why_it_matters": "ECHO-k chooses additional modalities from internal representations when the eventual prediction task is unknown.",
    "limitations": [
      "The theory’s restricted setting and the evaluated budgets matter; the work does not establish that omitted measurements are always dispensable."
    ],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-10-04-010/the-model-learned-which-measurement-was-worth-buying",
    "json_url": "https://themachinepress.com/story/mp-2026-10-04-010.json",
    "first_published_at": "2026-10-04T09:00:00.000-04:00",
    "modified_at": "2026-10-05T08:46:40.372-04:00",
    "content_status": "updated",
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    "carryover_reason": null,
    "key_claims": [
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        "claim_id": "claim-mp-2026-10-04-010-001",
        "text": "ECHO-k chooses additional modalities from internal representations when the eventual prediction task is unknown.",
        "source_ids": [
          "source-2026-10-04-010"
        ],
        "qualification": "The theory’s restricted setting and the evaluated budgets matter; the work does not establish that omitted measurements are always dispensable."
      }
    ],
    "source_ids": [
      "source-2026-10-04-010"
    ],
    "tags": [
      "multimodal learning",
      "measurement budgets",
      "feature acquisition"
    ],
    "image_url": null,
    "corrections": [
      {
        "correction_id": "correction-2026-10-04-001",
        "revision": 2,
        "summary": "Publication note: This October 4 edition was reconstructed on October 5 after the workstation was offline. It uses original October 2 submissions from the standard Sunday-evening arXiv release, rather than claiming those papers were available for the missed 9 AM run. The date and 9 AM publication slot preserve archive chronology; October 5 developments are excluded. The September 27 Invention Desk is carried over because its replacement was generated October 5.",
        "published_at": "2026-10-05T08:46:40.372-04:00",
        "affected_story_ids": [],
        "affected_claim_ids": []
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  },
  "sources": [
    {
      "source_id": "source-2026-10-04-010",
      "title": "arXiv preprint 2610.03454, original v1",
      "publisher": "arXiv / submitting research authors",
      "url": "https://arxiv.org/abs/2610.03454v1",
      "canonical_url": "https://arxiv.org/abs/2610.03454v1",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-10-02T11:33:07.000-04:00",
      "accessed_at": "2026-10-05T08:32:10.518-04:00",
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    }
  ],
  "corrections": [
    {
      "correction_id": "correction-2026-10-04-001",
      "revision": 2,
      "summary": "Publication note: This October 4 edition was reconstructed on October 5 after the workstation was offline. It uses original October 2 submissions from the standard Sunday-evening arXiv release, rather than claiming those papers were available for the missed 9 AM run. The date and 9 AM publication slot preserve archive chronology; October 5 developments are excluded. The September 27 Invention Desk is carried over because its replacement was generated October 5.",
      "published_at": "2026-10-05T08:46:40.372-04:00",
      "affected_story_ids": [],
      "affected_claim_ids": []
    }
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Model Learned Which Measurement Was Worth Buying",
    "publisher": "The Machine Press",
    "published_at": "2026-10-04T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-10-04-010/the-model-learned-which-measurement-was-worth-buying"
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}