Pith Number

pith:NG4XAKHD

pith:2012:NG4XAKHDS5QT7B3Q3L6SQO6FN3

not attested not anchored not stored refs pending

Document Clustering Evaluation: Divergence from a Random Baseline

Andrew Trotman, Christopher M. De Vries, Shlomo Geva

arxiv:1208.5654 v2 · 2012-08-28 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NG4XAKHDS5QT7B3Q3L6SQO6FN3}

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	2026-05-18T03:46:48.755411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b97028e397613f8770dafd283bc56ec1649f561102ce8252d136a0cc6a49c3

Aliases

arxiv: 1208.5654 · arxiv_version: 1208.5654v2 · doi: 10.48550/arxiv.1208.5654 · pith_short_12: NG4XAKHDS5QT · pith_short_16: NG4XAKHDS5QT7B3Q · pith_short_8: NG4XAKHD

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/NG4XAKHDS5QT7B3Q3L6SQO6FN3 \
  | 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: 69b97028e397613f8770dafd283bc56ec1649f561102ce8252d136a0cc6a49c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ab03253bc45649d1ea5448cec429c1dbb12298590af78e6803a7fd13247551e",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-08-28T13:23:29Z",
    "title_canon_sha256": "f5c123d3b4bccba0176059b2e9ae2c0b86015e3b5f00ec29bc404f174865a638"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5654",
    "kind": "arxiv",
    "version": 2
  }
}