Pith Number

pith:7DTWMTHQ

pith:2012:7DTWMTHQBIGAUPLOIG5PVZWYFB

not attested not anchored not stored refs pending

A non-parametric mixture model for topic modeling over time

Ahmed Hefny, Avinava Dubey, Eric P. Xing, Sinead Williamson

arxiv:1208.4411 v1 · 2012-08-22 · 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{7DTWMTHQBIGAUPLOIG5PVZWYFB}

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	2026-05-18T02:21:00.798001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8e7664cf00a0c0a3d6e41bafae6d82848443f5681c3fe3b10dd9cf12f9b7a2a

Aliases

arxiv: 1208.4411 · arxiv_version: 1208.4411v1 · doi: 10.48550/arxiv.1208.4411 · pith_short_12: 7DTWMTHQBIGA · pith_short_16: 7DTWMTHQBIGAUPLO · pith_short_8: 7DTWMTHQ

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/7DTWMTHQBIGAUPLOIG5PVZWYFB \
  | 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: f8e7664cf00a0c0a3d6e41bafae6d82848443f5681c3fe3b10dd9cf12f9b7a2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72edaf34d19ff0745506f0d7a694bb62664fe00241e36b94f5186174fbd0c04a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-08-22T02:02:40Z",
    "title_canon_sha256": "47625924d00643c26b5b4ee6946799f0b5f66f7359adf0cdb24cf6eb0b499b3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4411",
    "kind": "arxiv",
    "version": 1
  }
}