Pith Number

pith:EP3OFM5H

pith:2012:EP3OFM5HVIPLKBCFCQYTS7QM5Y

not attested not anchored not stored refs pending

A robust and sparse K-means clustering algorithm

Matias Salibian-Barrera, Ruben Zamar, Yumi Kondo

arxiv:1201.6082 v1 · 2012-01-29 · 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{EP3OFM5HVIPLKBCFCQYTS7QM5Y}

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	2026-05-18T04:03:33.751665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f6e2b3a7aa1eb504451431397e0cee0ece8ef3c6a6ab039bcdf4b248a60818

Aliases

arxiv: 1201.6082 · arxiv_version: 1201.6082v1 · doi: 10.48550/arxiv.1201.6082 · pith_short_12: EP3OFM5HVIPL · pith_short_16: EP3OFM5HVIPLKBCF · pith_short_8: EP3OFM5H

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/EP3OFM5HVIPLKBCFCQYTS7QM5Y \
  | 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: 23f6e2b3a7aa1eb504451431397e0cee0ece8ef3c6a6ab039bcdf4b248a60818

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1283a3826c22ef1e17283b475a841a8c4852f985af17cc86f4b1f0e688fb6849",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-01-29T21:17:02Z",
    "title_canon_sha256": "bcf3dafe5ed004885c5c4b738b5de755b0d48223773871a28078a96489e6d6ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6082",
    "kind": "arxiv",
    "version": 1
  }
}