Pith Number

pith:4LCH52YA

pith:2025:4LCH52YA53RBMN3AUFRRFPZYQZ

not attested not anchored not stored refs pending

Assessing Surrogate Heterogeneity in Real World Data Using Meta-Learners

Layla Parast, Rebecca Knowlton

arxiv:2504.15386 v1 · 2025-04-21 · stat.ME · cs.LG · 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{4LCH52YA53RBMN3AUFRRFPZYQZ}

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	2026-07-05T10:52:01.972567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2c47eeb00eee2163760a16312bf38864b4d938d5c7880ca71de565b2eed0b58

Aliases

arxiv: 2504.15386 · arxiv_version: 2504.15386v1 · doi: 10.48550/arxiv.2504.15386 · pith_short_12: 4LCH52YA53RB · pith_short_16: 4LCH52YA53RBMN3A · pith_short_8: 4LCH52YA

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/4LCH52YA53RBMN3AUFRRFPZYQZ \
  | 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: e2c47eeb00eee2163760a16312bf38864b4d938d5c7880ca71de565b2eed0b58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "583d2ccad7480f2f0fd77afac1b765a5e6596e3a00dc2c896bc47c0b304b0ab3",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2025-04-21T18:54:48Z",
    "title_canon_sha256": "fc6d40c9e6bb119649307b4d86e1778f9062e2ea4e1c8dd344cf704dbe4f3388"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.15386",
    "kind": "arxiv",
    "version": 1
  }
}