Pith Number

pith:GAI2Y34J

pith:2019:GAI2Y34JJOWP5UZIRSHLOYVQP4

not attested not anchored not stored refs pending

A new evaluation framework for topic modeling algorithms based on synthetic corpora

Doug Downey, Hanyu Shi, Isabel Diersen, Luis A. N. Amaral, Martin Gerlach

arxiv:1901.09848 v1 · 2019-01-28 · cs.CL · cs.LG · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GAI2Y34JJOWP5UZIRSHLOYVQP4}

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	2026-05-17T23:55:23.674253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3011ac6f894bacfed3288c8eb762b07f265aa5e0aa7c540958f2bb29a1be15d2

Aliases

arxiv: 1901.09848 · arxiv_version: 1901.09848v1 · doi: 10.48550/arxiv.1901.09848 · pith_short_12: GAI2Y34JJOWP · pith_short_16: GAI2Y34JJOWP5UZI · pith_short_8: GAI2Y34J

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/GAI2Y34JJOWP5UZIRSHLOYVQP4 \
  | 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: 3011ac6f894bacfed3288c8eb762b07f265aa5e0aa7c540958f2bb29a1be15d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80eed141fbe4864c76331ed1f989053b85c064f97cf85d7b3c8974643241fdeb",
    "cross_cats_sorted": [
      "cs.LG",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-01-28T17:41:19Z",
    "title_canon_sha256": "c608dd9a503bb1a15a51dd7a425568984ee8811a1b95ae0240105baf9263e8af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09848",
    "kind": "arxiv",
    "version": 1
  }
}