Pith Number

pith:KL66GKNC

pith:2019:KL66GKNCZ3E3NQ34O6DR5KDQ5R

not attested not anchored not stored refs pending

A Strongly Consistent Sparse $k$-means Clustering with Direct $l_1$ Penalization on Variable Weights

Saptarshi Chakraborty, Swagatam Das

arxiv:1903.10039 v1 · 2019-03-24 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KL66GKNCZ3E3NQ34O6DR5KDQ5R}

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	2026-05-17T23:50:34.688123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52fde329a2cec9b6c37c77871ea870ec7b0f81435c4bc4b8c168ebe427384d0f

Aliases

arxiv: 1903.10039 · arxiv_version: 1903.10039v1 · doi: 10.48550/arxiv.1903.10039 · pith_short_12: KL66GKNCZ3E3 · pith_short_16: KL66GKNCZ3E3NQ34 · pith_short_8: KL66GKNC

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/KL66GKNCZ3E3NQ34O6DR5KDQ5R \
  | 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: 52fde329a2cec9b6c37c77871ea870ec7b0f81435c4bc4b8c168ebe427384d0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6db368af45416e35c20e535f86ef10fdb42cb4cb1e9049bd1580abe94b5e779",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-03-24T18:45:35Z",
    "title_canon_sha256": "44c48b5e7d755df2be734f06fdc38ceb3224e46eac32499267e0bfd325e3d307"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.10039",
    "kind": "arxiv",
    "version": 1
  }
}