Pith Number

pith:4XQKRMRL

pith:2025:4XQKRMRLHXSULGS7Q6Q644IX4S

not attested not anchored not stored refs pending

Variable Selection for Stratified Sampling Designs in Semiparametric Accelerated Failure Time Models with Clustered Failure Times

Chuan-Fa Tang, Min Chen, Sy Han Chiou, Ying Chen

arxiv:2507.14689 v1 · 2025-07-19 · 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{4XQKRMRLHXSULGS7Q6Q644IX4S}

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	2026-07-05T11:40:11.862934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5e0a8b22b3de5459a5f87a1ee7117e48abbc797cfb79d196172e397a42f0d27

Aliases

arxiv: 2507.14689 · arxiv_version: 2507.14689v1 · doi: 10.48550/arxiv.2507.14689 · pith_short_12: 4XQKRMRLHXSU · pith_short_16: 4XQKRMRLHXSULGS7 · pith_short_8: 4XQKRMRL

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/4XQKRMRLHXSULGS7Q6Q644IX4S \
  | 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: e5e0a8b22b3de5459a5f87a1ee7117e48abbc797cfb79d196172e397a42f0d27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b93d50fe44d0769d56e29f1c146c145aa3cd8bed1cf2c0d3dde0f6da29c42cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2025-07-19T16:35:00Z",
    "title_canon_sha256": "b4d93dda5c9fe666cc2e3d51e9ec87158a64509992b737274e9f8be6c66067b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.14689",
    "kind": "arxiv",
    "version": 1
  }
}