Pith Number

pith:UDT2WQCL

pith:2026:UDT2WQCLQGMDWWRLNLC3XXXRBK

not attested not anchored not stored refs pending

Partial pooling predicts cross-validation reliability: a closed-form triage and Rao-Blackwellised cure for hierarchical LOO

Aidan D Bindoff

arxiv:2607.18836 v1 · 2026-07-21 · stat.ME · stat.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UDT2WQCLQGMDWWRLNLC3XXXRBK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-07-22T01:23:15.041138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0e7ab404b81983b5a2b6ac5bbdef10ab966d50aa8da89ebb7bba32c63cc7abb

Aliases

arxiv: 2607.18836 · arxiv_version: 2607.18836v1 · doi: 10.48550/arxiv.2607.18836 · pith_short_12: UDT2WQCLQGMD · pith_short_16: UDT2WQCLQGMDWWRL · pith_short_8: UDT2WQCL

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/UDT2WQCLQGMDWWRLNLC3XXXRBK \
  | 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: a0e7ab404b81983b5a2b6ac5bbdef10ab966d50aa8da89ebb7bba32c63cc7abb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72c359e3218db1543c5e386f430ed3f6a35a11db34e01a17fd3568161e16492c",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2026-07-21T08:18:44Z",
    "title_canon_sha256": "6036950362194777993d20075d1ac6c563b662618b2cece64b6c28f7687b49f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18836",
    "kind": "arxiv",
    "version": 1
  }
}