Pith Number

pith:4HOMJ4TA

pith:2013:4HOMJ4TATN7FCLNCLYZWURSM3H

not attested not anchored not stored refs pending

A Nested HDP for Hierarchical Topic Models

Chong Wang, David Blei, John Paisley, Michael I. Jordan

arxiv:1301.3570 v1 · 2013-01-16 · 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{4HOMJ4TATN7FCLNCLYZWURSM3H}

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	2026-05-18T03:36:17.439219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1dcc4f2609b7e512da25e336a464cd9e54a8774a2c5de40f884430ec9763d30

Aliases

arxiv: 1301.3570 · arxiv_version: 1301.3570v1 · doi: 10.48550/arxiv.1301.3570 · pith_short_12: 4HOMJ4TATN7F · pith_short_16: 4HOMJ4TATN7FCLNC · pith_short_8: 4HOMJ4TA

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/4HOMJ4TATN7FCLNCLYZWURSM3H \
  | 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: e1dcc4f2609b7e512da25e336a464cd9e54a8774a2c5de40f884430ec9763d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "813d4a1127f61e744b18eb83526652c31021dde8af38caa92fe6fc435822c0d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-01-16T03:24:43Z",
    "title_canon_sha256": "a38ef239a6ab928754b6cf9b96f8629903bc5bd097afb5c038c4375dac14fb42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.3570",
    "kind": "arxiv",
    "version": 1
  }
}