Pith Number

pith:QJ4S33PE

pith:2026:QJ4S33PEU5SO4656UQDCRRZINW

not attested not anchored not stored refs pending

When Sample Selection Bias Precipitates Model Collapse

Jingqi Zhang, Meng Zhang, Peihua Mai, Wei Liu, Xianglong Du, Xinbao Qiao, Yan Pang

arxiv:2606.13732 v2 · 2026-06-11 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJ4S33PEU5SO4656UQDCRRZINW}

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	2026-07-03T01:17:23.067272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82792dede4a764ee7bbea40628c7286dbafb1d843169878e54ddb598b8eb5079

Aliases

arxiv: 2606.13732 · arxiv_version: 2606.13732v2 · doi: 10.48550/arxiv.2606.13732 · pith_short_12: QJ4S33PEU5SO · pith_short_16: QJ4S33PEU5SO4656 · pith_short_8: QJ4S33PE

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/QJ4S33PEU5SO4656UQDCRRZINW \
  | 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: 82792dede4a764ee7bbea40628c7286dbafb1d843169878e54ddb598b8eb5079

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a2442bb8425a44e8b33d86bd49413c540a4b2ddf3e474ebd91231a938a66f44",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-11T11:49:39Z",
    "title_canon_sha256": "643531231c869862e5bc4e12ee7df19ccc0a6225ac71b7df56318012f7cd8224"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.13732",
    "kind": "arxiv",
    "version": 2
  }
}