Pith Number

pith:KWIQ4NPN

pith:2017:KWIQ4NPNRLIIDSB5A4B2QOZ2X2

not attested not anchored not stored refs pending

A network approach to topic models

Eduardo G. Altmann, Martin Gerlach, Tiago P. Peixoto

arxiv:1708.01677 v2 · 2017-08-04 · stat.ML · cs.CL · physics.data-an · 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{KWIQ4NPNRLIIDSB5A4B2QOZ2X2}

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	2026-05-18T00:10:24.379571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55910e35ed8ad081c83d0703a83b3abe8c52251c12ec53a4f167c8942929f952

Aliases

arxiv: 1708.01677 · arxiv_version: 1708.01677v2 · doi: 10.48550/arxiv.1708.01677 · pith_short_12: KWIQ4NPNRLII · pith_short_16: KWIQ4NPNRLIIDSB5 · pith_short_8: KWIQ4NPN

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/KWIQ4NPNRLIIDSB5A4B2QOZ2X2 \
  | 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: 55910e35ed8ad081c83d0703a83b3abe8c52251c12ec53a4f167c8942929f952

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6b433a404d3bddffcc272a618c239036e4b85a02e9509c882931bd14b9ba447",
    "cross_cats_sorted": [
      "cs.CL",
      "physics.data-an",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2017-08-04T22:35:50Z",
    "title_canon_sha256": "e1a20b32b2327be4c5b24b5a720d33a0461f0fa2aca5f3eda6658e2872af6139"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01677",
    "kind": "arxiv",
    "version": 2
  }
}