Pith Number

pith:HF2NJOFN

pith:2016:HF2NJOFNTWFMOEH757ZNSFAAPP

not attested not anchored not stored refs pending

On Equivalence of Likelihood Maximization of Stochastic Block Model and Constrained Nonnegative Matrix Factorization

Hui-Min Cheng, Xin Liu, Yu-Fei Wang, Yujie Gai, Zhong-Yuan Zhang

arxiv:1604.01200 v5 · 2016-04-05 · cs.SI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HF2NJOFNTWFMOEH757ZNSFAAPP}

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	2026-05-18T00:40:41.427301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3974d4b8ad9d8ac710ffeff2d914007bfdde2d3bd9491fa65117d0acd40b5a5e

Aliases

arxiv: 1604.01200 · arxiv_version: 1604.01200v5 · doi: 10.48550/arxiv.1604.01200 · pith_short_12: HF2NJOFNTWFM · pith_short_16: HF2NJOFNTWFMOEH7 · pith_short_8: HF2NJOFN

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/HF2NJOFNTWFMOEH757ZNSFAAPP \
  | 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: 3974d4b8ad9d8ac710ffeff2d914007bfdde2d3bd9491fa65117d0acd40b5a5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a4837ba042b29ed938b52ecc975a07aed4d1c65c72978c12f140aadf5deadc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2016-04-05T09:47:34Z",
    "title_canon_sha256": "e197381dc9e4e2c903d685c89f64c4338875dedaf2e5688c856446e14f942bb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01200",
    "kind": "arxiv",
    "version": 5
  }
}