Pith Number

pith:2HGKA5EA

pith:2023:2HGKA5EAU3WVS3U7FUPGT2ZZDG

not attested not anchored not stored refs pending

Blocked Cross-Validation: A Precise and Efficient Method for Hyperparameter Tuning

Giovanni Maria Merola

arxiv:2306.06591 v2 · 2023-06-11 · cs.LG · 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{2HGKA5EAU3WVS3U7FUPGT2ZZDG}

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	2026-07-05T06:35:52.240721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1cca07480a6ed596e9f2d1e69eb391986c78a2bcf3447b22286142ff147b11a

Aliases

arxiv: 2306.06591 · arxiv_version: 2306.06591v2 · doi: 10.48550/arxiv.2306.06591 · pith_short_12: 2HGKA5EAU3WV · pith_short_16: 2HGKA5EAU3WVS3U7 · pith_short_8: 2HGKA5EA

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/2HGKA5EAU3WVS3U7FUPGT2ZZDG \
  | 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: d1cca07480a6ed596e9f2d1e69eb391986c78a2bcf3447b22286142ff147b11a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ea8a59e80d9076a5bc0d885b607fdc4b17feceecf15ad3111f040f511c820a0",
    "cross_cats_sorted": [
      "stat.ME"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2023-06-11T04:58:47Z",
    "title_canon_sha256": "c16f0ecee7b23d32ef0a9063fb423dd7d523226dfeafb963f41356ecd24a4d39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2306.06591",
    "kind": "arxiv",
    "version": 2
  }
}