Pith Number

pith:CCK3BX4Z

pith:2019:CCK3BX4ZERPRQJ43ZJ426DBPQP

not attested not anchored not stored refs pending

A Unified Framework for Tuning Hyperparameters in Clustering Problems

Purnamrita Sarkar, Xinjie Fan, Yuguang Yue, Y. X. Rachel Wang

arxiv:1910.08018 v2 · 2019-10-17 · stat.ML · cs.LG · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CCK3BX4ZERPRQJ43ZJ426DBPQP}

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	2026-07-05T00:37:48.568334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1095b0df99245f18279bca79af0c2f83de6c9109ae0ac9cf899a8a9703a14d57

Aliases

arxiv: 1910.08018 · arxiv_version: 1910.08018v2 · doi: 10.48550/arxiv.1910.08018 · pith_short_12: CCK3BX4ZERPR · pith_short_16: CCK3BX4ZERPRQJ43 · pith_short_8: CCK3BX4Z

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/CCK3BX4ZERPRQJ43ZJ426DBPQP \
  | 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: 1095b0df99245f18279bca79af0c2f83de6c9109ae0ac9cf899a8a9703a14d57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc902473a79857327d3ce08ba2198c4f06786b689f30f36275336963da16d5a2",
    "cross_cats_sorted": [
      "cs.LG",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-10-17T16:40:42Z",
    "title_canon_sha256": "194ae0c4cc65bae97e7820eed9824b96da8dc3f8a835596140609256b0300243"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.08018",
    "kind": "arxiv",
    "version": 2
  }
}