Pith Number

pith:56LBRDKG

pith:2021:56LBRDKG6WLGQTYXGBSLFC6OGC

not attested not anchored not stored refs pending

An Entropy Weighted Nonnegative Matrix Factorization Algorithm for Feature Representation

Bingxue Wu, Can Tong, Jiao Wei, Qiang He, Shouliang Qi, Yudong Yao, YueYang Teng

arxiv:2111.14007 v1 · 2021-11-27 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{56LBRDKG6WLGQTYXGBSLFC6OGC}

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	2026-07-05T03:35:38.113960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef96188d46f596684f173064b28bce30a731f73521b6e2882d9d3a54c8532b4d

Aliases

arxiv: 2111.14007 · arxiv_version: 2111.14007v1 · doi: 10.48550/arxiv.2111.14007 · pith_short_12: 56LBRDKG6WLG · pith_short_16: 56LBRDKG6WLGQTYX · pith_short_8: 56LBRDKG

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/56LBRDKG6WLGQTYXGBSLFC6OGC \
  | 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: ef96188d46f596684f173064b28bce30a731f73521b6e2882d9d3a54c8532b4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7f3db9dff2f691a189fc2bd44b50018d7f785eb40614b5b2c79a99e1f85060d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-11-27T23:37:20Z",
    "title_canon_sha256": "dd8c9d6ef8e26a99938562a6a75b91d7a03b2d294c5beaf5d8257c056ac48476"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.14007",
    "kind": "arxiv",
    "version": 1
  }
}