Pith Number

pith:U5TWAYCR

pith:2021:U5TWAYCRDM7QCJMEKRDEFZLIXF

not attested not anchored not stored refs pending

Variable selection with missing data in both covariates and outcomes: Imputation and machine learning

Jiayi Ji, Jung-Yi Joyce Lin, Liangyuan Hu

arxiv:2104.02769 v2 · 2021-04-06 · stat.ME · stat.AP · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5TWAYCRDM7QCJMEKRDEFZLIXF}

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	2026-07-05T02:56:04.852392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7676060511b3f012584544642e568b968f5f0828aec4bee09af53a0d86f7be5

Aliases

arxiv: 2104.02769 · arxiv_version: 2104.02769v2 · doi: 10.48550/arxiv.2104.02769 · pith_short_12: U5TWAYCRDM7Q · pith_short_16: U5TWAYCRDM7QCJME · pith_short_8: U5TWAYCR

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/U5TWAYCRDM7QCJMEKRDEFZLIXF \
  | 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: a7676060511b3f012584544642e568b968f5f0828aec4bee09af53a0d86f7be5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2284176e65a91ffe90a407ee66f12c852412dbc5f54d08548b71f668e026352a",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2021-04-06T20:18:29Z",
    "title_canon_sha256": "95f03967c0b9cfbb919651d3e9b87664c8343bff63360f536746e05ed716e955"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02769",
    "kind": "arxiv",
    "version": 2
  }
}