Pith Number

pith:ZJN4OQIQ

pith:2014:ZJN4OQIQVXJBTA5JIRTU72IJFY

not attested not anchored not stored refs pending

Sparse K-Means with $\ell_{\infty}/\ell_0$ Penalty for High-Dimensional Data Clustering

Rongjian Li, Xiangyu Chang, Yu Wang, Zongben Xu

arxiv:1403.7890 v1 · 2014-03-31 · stat.ML · cs.LG · 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{ZJN4OQIQVXJBTA5JIRTU72IJFY}

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	2026-05-17T23:53:01.795784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca5bc74110add21983a944674fe9092e19b705c5e953f5025d544bd7e0db15a3

Aliases

arxiv: 1403.7890 · arxiv_version: 1403.7890v1 · doi: 10.48550/arxiv.1403.7890 · pith_short_12: ZJN4OQIQVXJB · pith_short_16: ZJN4OQIQVXJBTA5J · pith_short_8: ZJN4OQIQ

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/ZJN4OQIQVXJBTA5JIRTU72IJFY \
  | 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: ca5bc74110add21983a944674fe9092e19b705c5e953f5025d544bd7e0db15a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5352a192f07fb590f1683f0f2bfbbdb4fed34c799a547a79f118253ef7b63d7a",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-03-31T07:18:55Z",
    "title_canon_sha256": "6c190432bfc32f60f3f56529d854ffaf66f8b58f2ddd417ce81edf4df5a3c0d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7890",
    "kind": "arxiv",
    "version": 1
  }
}