{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-10-03-014",
    "source_story_id": "tmp-story-simpletime-foundation-blind-spots",
    "edition_id": "mp-2026-10-03-morning-0086",
    "edition_url": "https://themachinepress.com/edition/2026-10-03",
    "position": 14,
    "story_type": "dispatch",
    "section": "benchmarks-evals",
    "editorial_classification": "editorial",
    "headline": "Foundation Forecasters Missed the Easy Patterns",
    "slug": "foundation-forecasters-missed-the-easy-patterns",
    "dek": "SimpleTimeBench found zero-shot failures on monotonic trends, periodic signals and leading indicators.",
    "summary": "SimpleTimeBench found zero-shot failures on monotonic trends, periodic signals and leading indicators.",
    "body_text": "SimpleTimeBench treats basic temporal relationships as unit tests that a broad forecasting model should nearly solve. Chronos-2, Moirai and Toto frequently produced suboptimal zero-shot forecasts on simple univariate and multivariate patterns, and fine-tuning Chronos-2 for some tasks degraded others. The authors also report underuse of leading indicators in real sensor forecasting, arguing that benchmark scale can hide missing inductive biases for elementary temporal logic.",
    "why_it_matters": "SimpleTimeBench found zero-shot failures on monotonic trends, periodic signals and leading indicators.",
    "limitations": [],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-10-03-014/foundation-forecasters-missed-the-easy-patterns",
    "json_url": "https://themachinepress.com/story/mp-2026-10-03-014.json",
    "first_published_at": "2026-10-03T09:00:00.000-04:00",
    "modified_at": "2026-10-03T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-10-03-014-001",
        "text": "SimpleTimeBench found zero-shot failures on monotonic trends, periodic signals and leading indicators.",
        "source_ids": [
          "source-2026-10-03-014"
        ],
        "qualification": null
      }
    ],
    "source_ids": [
      "source-2026-10-03-014"
    ],
    "tags": [
      "time series",
      "foundation models",
      "forecasting"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-10-03-014",
      "title": "arXiv preprint 2610.02058",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2610.02058",
      "canonical_url": "https://arxiv.org/abs/2610.02058",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-10-01T13:02:16.000-04:00",
      "accessed_at": "2026-10-03T08:31:37.000-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-10-03-014-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "Foundation Forecasters Missed the Easy Patterns",
    "publisher": "The Machine Press",
    "published_at": "2026-10-03T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-10-03-014/foundation-forecasters-missed-the-easy-patterns"
  }
}