Pith Number

pith:FBWFOPX3

pith:2019:FBWFOPX3V4I66G5LOUDY42H57X

not attested not anchored not stored refs pending

Incremental Cluster Validity Indices for Hard Partitions: Extensions and Comparative Study

Donald C. Wunsch II, Leonardo Enzo Brito da Silva, Niklas M. Melton

arxiv:1902.06711 v1 · 2019-02-18 · 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{FBWFOPX3V4I66G5LOUDY42H57X}

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	2026-05-17T23:53:44.739984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

286c573efbaf11ef1bab75078e68fdfdc489dd643ea9afa116ef5e32f1416306

Aliases

arxiv: 1902.06711 · arxiv_version: 1902.06711v1 · doi: 10.48550/arxiv.1902.06711 · pith_short_12: FBWFOPX3V4I6 · pith_short_16: FBWFOPX3V4I66G5L · pith_short_8: FBWFOPX3

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/FBWFOPX3V4I66G5LOUDY42H57X \
  | 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: 286c573efbaf11ef1bab75078e68fdfdc489dd643ea9afa116ef5e32f1416306

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2da1e76faf69998e9468a0d05dca7c8f6061cf1ac081f4dc699fa9abd21962f7",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-02-18T18:27:44Z",
    "title_canon_sha256": "de34c6889ef1ca0161ed85b553fb1b148cf2e8e6316a5ca8a61f4b62f61672fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06711",
    "kind": "arxiv",
    "version": 1
  }
}