Pith Number

pith:QFEQI5BY

pith:2026:QFEQI5BYZAFAGWWFDIXBHRTA4F

not attested not anchored not stored refs pending

PnP-Corrector: A Universal Correction Framework for Coupled Spatiotemporal Forecasting

Fan Xu, Fan Zhang, Hao Jia, Hao Wu, Penghao Zhao, Qingsong Wen, Ruijian Gou, Xian Wu, Xiaomeng Huang, Yuan Gao, Yuxuan Liang, Yuxu Lu

By freezing pre-trained physics engines and training only a correction agent, the PnP-Corrector framework counters reciprocal error amplification to improve long-term accuracy in coupled spatiotemporal forecasts.

arxiv:2605.08935 v3 · 2026-05-09 · cs.AI · cs.LG

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\usepackage{pith}
\pithnumber{QFEQI5BYZAFAGWWFDIXBHRTA4F}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

In the challenging task of a 300-day global ocean-atmosphere coupled forecast, our PnP-Corrector framework reduces the prediction error of the baseline model by 29% and surpasses state-of-the-art models on several key metrics.

C2weakest assumption

That a correction agent trained separately on frozen physics engines can proactively counteract systematic biases arising from reciprocal error amplification without retraining or modifying the underlying simulators.

C3one line summary

PnP-Corrector decouples physics simulation from error correction via a plug-and-play agent, cutting error by 29% in 300-day global ocean-atmosphere forecasts.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-03T01:05:51.116060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8149047438c80a035ac51a2e13c660e1682dfa6663d7c9262af506a6da272820

Aliases

arxiv: 2605.08935 · arxiv_version: 2605.08935v3 · doi: 10.48550/arxiv.2605.08935 · pith_short_12: QFEQI5BYZAFA · pith_short_16: QFEQI5BYZAFAGWWF · pith_short_8: QFEQI5BY

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QFEQI5BYZAFAGWWFDIXBHRTA4F \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8149047438c80a035ac51a2e13c660e1682dfa6663d7c9262af506a6da272820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "065213b378716b30d1fd0db6535ea8fb1f7a9944e1b041857c53442326b05f7d",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-09T13:12:33Z",
    "title_canon_sha256": "f3e8f48494c0204e95bd84952baf6e6c6cc654fafc5b60d7cb97e0854d4a72e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.08935",
    "kind": "arxiv",
    "version": 3
  }
}