Pith Number

pith:DLN5B57X

pith:2012:DLN5B57XIJ6CNU5IOHB5WTLSR7

not attested not anchored not stored refs pending

Memory-Efficient Topic Modeling

Jia Zeng, Xiao-Qin Cao, Zhi-Qiang Liu

arxiv:1206.1147 v2 · 2012-06-06 · cs.LG · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLN5B57XIJ6CNU5IOHB5WTLSR7}

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	2026-05-18T03:54:03.822312Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1adbd0f7f7427c26d3a871c3db4d728fdeded5bcdb85f1a88e15d4e1ff7260b2

Aliases

arxiv: 1206.1147 · arxiv_version: 1206.1147v2 · doi: 10.48550/arxiv.1206.1147 · pith_short_12: DLN5B57XIJ6C · pith_short_16: DLN5B57XIJ6CNU5I · pith_short_8: DLN5B57X

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/DLN5B57XIJ6CNU5IOHB5WTLSR7 \
  | 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: 1adbd0f7f7427c26d3a871c3db4d728fdeded5bcdb85f1a88e15d4e1ff7260b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb6013ea4f57fee0392b6bb3c2899f8a7151f37d052ee1782ff51aef58bfbe06",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-06-06T08:34:43Z",
    "title_canon_sha256": "2c5f73da9c0a6424d466964678835f1344611165930605778941e87f67e5d1bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1147",
    "kind": "arxiv",
    "version": 2
  }
}