Pith Number

pith:IOVMMEZW

pith:2017:IOVMMEZWV2CP2VT6UIMZOK4NP3

not attested not anchored not stored refs pending

Estimation and prediction in sparse and unbalanced tables

Daryl Pregibon, Qingyuan Zhao, Trevor Hastie

arxiv:1703.02081 v1 · 2017-03-06 · 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{IOVMMEZWV2CP2VT6UIMZOK4NP3}

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	2026-05-18T00:49:20.740623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43aac61336ae84fd567ea219972b8d7efe86c191dd8214ee973aad2624cc5969

Aliases

arxiv: 1703.02081 · arxiv_version: 1703.02081v1 · doi: 10.48550/arxiv.1703.02081 · pith_short_12: IOVMMEZWV2CP · pith_short_16: IOVMMEZWV2CP2VT6 · pith_short_8: IOVMMEZW

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/IOVMMEZWV2CP2VT6UIMZOK4NP3 \
  | 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: 43aac61336ae84fd567ea219972b8d7efe86c191dd8214ee973aad2624cc5969

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c56cfd5fb9efdb91949c6f76b3e47d3648066a506c1a4f0d7768183e92ab270f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2017-03-06T19:44:45Z",
    "title_canon_sha256": "df8ef69ecc30d3398eb04a33cb4643fa2ecfbd8ec2402a32230e0752e366a554"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.02081",
    "kind": "arxiv",
    "version": 1
  }
}