Pith Number

pith:HEF47AQB

pith:2012:HEF47AQBN3YLJKGNHYRG3D2VQY

not attested not anchored not stored refs pending

A New Approach to Speeding Up Topic Modeling

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

arxiv:1204.0170 v2 · 2012-04-01 · 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{HEF47AQBN3YLJKGNHYRG3D2VQY}

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	2026-05-18T02:54:39.782303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

390bcf82016ef0b4a8cd3e226d8f55863d83d7a15c82ce099e86dce1cfde2730

Aliases

arxiv: 1204.0170 · arxiv_version: 1204.0170v2 · doi: 10.48550/arxiv.1204.0170 · pith_short_12: HEF47AQBN3YL · pith_short_16: HEF47AQBN3YLJKGN · pith_short_8: HEF47AQB

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/HEF47AQBN3YLJKGNHYRG3D2VQY \
  | 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: 390bcf82016ef0b4a8cd3e226d8f55863d83d7a15c82ce099e86dce1cfde2730

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ca962a558dd421d45e8e2da53f10434242222c15ae732e74ae8c7858773e8fa",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-04-01T07:07:27Z",
    "title_canon_sha256": "21856f4c7fd9c218d58250eaf2891af0c706c6b0513839353adb02089c65f416"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0170",
    "kind": "arxiv",
    "version": 2
  }
}