Pith Number

pith:5X2QFSOS

pith:2014:5X2QFSOSS7TYGWA6LYDU5VR6I3

not attested not anchored not stored refs pending

An Online Expectation-Maximisation Algorithm for Nonnegative Matrix Factorisation Models

A. Taylan Cemgil, Sinan Yildirim, Sumeetpal S. Singh

arxiv:1401.2490 v1 · 2014-01-11 · cs.LG · stat.CO · 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{5X2QFSOSS7TYGWA6LYDU5VR6I3}

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	2026-05-18T03:02:33.406366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edf502c9d297e783581e5e074ed63e46fa6c8d75ae8f407539b649a027fc6b3f

Aliases

arxiv: 1401.2490 · arxiv_version: 1401.2490v1 · doi: 10.48550/arxiv.1401.2490 · pith_short_12: 5X2QFSOSS7TY · pith_short_16: 5X2QFSOSS7TYGWA6 · pith_short_8: 5X2QFSOS

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/5X2QFSOSS7TYGWA6LYDU5VR6I3 \
  | 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: edf502c9d297e783581e5e074ed63e46fa6c8d75ae8f407539b649a027fc6b3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "476ea2467ebf988377c9fbae0e052b155afcdd454b7978ea41295aa6d2b97475",
    "cross_cats_sorted": [
      "stat.CO",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-01-11T00:54:27Z",
    "title_canon_sha256": "7a3620d6577e5a3f0ce1ee8ca3ecfe2f5afe3ce80dfdd1237be43cc952532b42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2490",
    "kind": "arxiv",
    "version": 1
  }
}