Pith Number

pith:QF2EXI6X

pith:2020:QF2EXI6XWU2ILZ6GEM5Z6O6IRQ

not attested not anchored not stored refs pending

Approximate Cross-Validation for Structured Models

Sameer K. Deshpande, Soumya Ghosh, Tamara Broderick, Tin D. Nguyen, William T. Stephenson

arxiv:2006.12669 v2 · 2020-06-23 · stat.ML · cs.LG · stat.CO · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QF2EXI6XWU2ILZ6GEM5Z6O6IRQ}

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	2026-07-05T01:55:57.003339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81744ba3d7b53485e7c6233b9f3bc88c1672be94a39cef4a3553dd80418cd59d

Aliases

arxiv: 2006.12669 · arxiv_version: 2006.12669v2 · doi: 10.48550/arxiv.2006.12669 · pith_short_12: QF2EXI6XWU2I · pith_short_16: QF2EXI6XWU2ILZ6G · pith_short_8: QF2EXI6X

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/QF2EXI6XWU2ILZ6GEM5Z6O6IRQ \
  | 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: 81744ba3d7b53485e7c6233b9f3bc88c1672be94a39cef4a3553dd80418cd59d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "826f63eb3bae86b59cecb4c48a629c6fb13a8102dc5df6cc768ea7b13c39cc1a",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.CO",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2020-06-23T00:06:03Z",
    "title_canon_sha256": "7aadf11ad02c1386a396a0586ca6df8c2e404d9d62e517d281efe1a5faee7d1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.12669",
    "kind": "arxiv",
    "version": 2
  }
}