Pith Number

pith:Q6HL2NEF

pith:2012:Q6HL2NEFIGB4HQYRE4CF57GP42

not attested not anchored not stored refs pending

Nonparametric Unsupervised Classification

Thomas S. Huang, Yingzhen Yang

arxiv:1210.0645 v5 · 2012-10-02 · 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{Q6HL2NEFIGB4HQYRE4CF57GP42}

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	2026-05-18T03:25:14.514526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

878ebd34854183c3c31127045efccfe692ddecde3db61c43fcc510034051466a

Aliases

arxiv: 1210.0645 · arxiv_version: 1210.0645v5 · doi: 10.48550/arxiv.1210.0645 · pith_short_12: Q6HL2NEFIGB4 · pith_short_16: Q6HL2NEFIGB4HQYR · pith_short_8: Q6HL2NEF

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/Q6HL2NEFIGB4HQYRE4CF57GP42 \
  | 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: 878ebd34854183c3c31127045efccfe692ddecde3db61c43fcc510034051466a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd3ff8fac362f36984ac391974353337fcbd0364d45a22c34feed71b3e2559b5",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-10-02T04:22:50Z",
    "title_canon_sha256": "0135178566413e345fe40beafcc65a6f0503375e54a4f7b761205c7d61132698"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.0645",
    "kind": "arxiv",
    "version": 5
  }
}