Pith Number

pith:2UY6KPC2

pith:2015:2UY6KPC2GFNRS2UFMFMJYAWUNO

not attested not anchored not stored refs pending

Dependent Indian Buffet Process-based Sparse Nonparametric Nonnegative Matrix Factorization

Guangquan Zhang, Jie Lu, Junyu Xuan, Richard Yi Da Xu, Xiangfeng Luo

arxiv:1507.03176 v1 · 2015-07-12 · 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{2UY6KPC2GFNRS2UFMFMJYAWUNO}

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	2026-05-18T01:36:59.489179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d531e53c5a315b196a8561589c02d46bbff09570a94a05bb2b9a583139981823

Aliases

arxiv: 1507.03176 · arxiv_version: 1507.03176v1 · doi: 10.48550/arxiv.1507.03176 · pith_short_12: 2UY6KPC2GFNR · pith_short_16: 2UY6KPC2GFNRS2UF · pith_short_8: 2UY6KPC2

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/2UY6KPC2GFNRS2UFMFMJYAWUNO \
  | 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: d531e53c5a315b196a8561589c02d46bbff09570a94a05bb2b9a583139981823

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ece2fce5cb8c1b212930e1d913c0bbd170fe6e43b9feb494ec8e002e210c780d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-07-12T01:41:12Z",
    "title_canon_sha256": "4f39dc9c541d25fd85f523f688288bbe487e2a37fd1cd6040cee79411c8696f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03176",
    "kind": "arxiv",
    "version": 1
  }
}