Pith Number

pith:JWL5HOEG

pith:2014:JWL5HOEGAVYMV2EWYNC567JYX6

not attested not anchored not stored refs pending

Exact and Heuristic Algorithms for Semi-Nonnegative Matrix Factorization

Abhishek Kumar, Nicolas Gillis

arxiv:1410.7220 v3 · 2014-10-27 · math.NA · cs.LG · cs.NA · math.OC · 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{JWL5HOEGAVYMV2EWYNC567JYX6}

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	2026-05-18T01:29:13.430518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d97d3b8860570cae896c345df7d38bfb345cc2be4c63e100f23d90aa6ebc2c1

Aliases

arxiv: 1410.7220 · arxiv_version: 1410.7220v3 · doi: 10.48550/arxiv.1410.7220 · pith_short_12: JWL5HOEGAVYM · pith_short_16: JWL5HOEGAVYMV2EW · pith_short_8: JWL5HOEG

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/JWL5HOEGAVYMV2EWYNC567JYX6 \
  | 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: 4d97d3b8860570cae896c345df7d38bfb345cc2be4c63e100f23d90aa6ebc2c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39e7528b17074eb8c8aff382f0441f8b39897cd6cc56d062c3e4163474ae7702",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-10-27T13:09:29Z",
    "title_canon_sha256": "99cede2e8a54bc4820134844737b81a893fd76f71bf86134c903f8b997379122"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.7220",
    "kind": "arxiv",
    "version": 3
  }
}