Pith Number

pith:NOOUX2Y7

pith:2012:NOOUX2Y72UCGPAV7YKLGJKCSKL

not attested not anchored not stored refs pending

A Spectral Algorithm for Latent Dirichlet Allocation

Animashree Anandkumar, Daniel Hsu, Dean P. Foster, Sham M. Kakade, Yi-Kai Liu

arxiv:1204.6703 v4 · 2012-04-30 · cs.LG · 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{NOOUX2Y72UCGPAV7YKLGJKCSKL}

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	2026-05-18T03:36:06.449026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b9d4beb1fd5046782bfc29664a85252dd7dc1fc52ab3b9bd2bb026af3c250b7

Aliases

arxiv: 1204.6703 · arxiv_version: 1204.6703v4 · doi: 10.48550/arxiv.1204.6703 · pith_short_12: NOOUX2Y72UCG · pith_short_16: NOOUX2Y72UCGPAV7 · pith_short_8: NOOUX2Y7

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/NOOUX2Y72UCGPAV7YKLGJKCSKL \
  | 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: 6b9d4beb1fd5046782bfc29664a85252dd7dc1fc52ab3b9bd2bb026af3c250b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37030cf91a3ccc39cb661ed8fe49d02da82542e01a67ca603374b45bf092aa13",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-04-30T17:06:06Z",
    "title_canon_sha256": "4db286cb10a698bedf04d4c1611434098056fb1e5e75f90ea55a0ae24e16512b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6703",
    "kind": "arxiv",
    "version": 4
  }
}