Pith Number

pith:3JRMRDBS

pith:2014:3JRMRDBSNPIUIASTI3Y4WQP3MM

not attested not anchored not stored refs pending

"Look Ma, No Hands!" A Parameter-Free Topic Model

Jian Tang, Ming Zhang, Qiaozhu Mei

arxiv:1409.2993 v1 · 2014-09-10 · cs.LG · cs.CL · 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{3JRMRDBSNPIUIASTI3Y4WQP3MM}

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	2026-05-18T02:43:08.554115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da62c88c326bd144025346f1cb41fb6312765802c95d8bdcb4c42a277511b7b9

Aliases

arxiv: 1409.2993 · arxiv_version: 1409.2993v1 · doi: 10.48550/arxiv.1409.2993 · pith_short_12: 3JRMRDBSNPIU · pith_short_16: 3JRMRDBSNPIUIAST · pith_short_8: 3JRMRDBS

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/3JRMRDBSNPIUIASTI3Y4WQP3MM \
  | 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: da62c88c326bd144025346f1cb41fb6312765802c95d8bdcb4c42a277511b7b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b3af4b2b0b824abace6ebae2f2bb9afbf030fa41e67be46ab65c81950a7099f",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-09-10T08:41:35Z",
    "title_canon_sha256": "fca7d7cf836d578418c9486aae9f4b9c13de2552c561ce8e2d457e4354b61037"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2993",
    "kind": "arxiv",
    "version": 1
  }
}