Pith Number

pith:H422WOC3

pith:2022:H422WOC33FC7ENL6BQVBVQTA4P

not attested not anchored not stored refs pending

Subspace Nonnegative Matrix Factorization for Feature Representation

Can Tong, Chen Li, Jiao Wei, Junhang Li, Shouliang Qi, Tingting Shen, Yuchen Liu, Yudong Yao, YueYang Teng

arxiv:2204.08382 v1 · 2022-04-18 · cs.CV · 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{H422WOC33FC7ENL6BQVBVQTA4P}

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	2026-07-05T04:15:25.285384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f35ab385bd945f2357e0c2a1ac260e3ec8c530ca3349fb1752e32c8e18c9785

Aliases

arxiv: 2204.08382 · arxiv_version: 2204.08382v1 · doi: 10.48550/arxiv.2204.08382 · pith_short_12: H422WOC33FC7 · pith_short_16: H422WOC33FC7ENL6 · pith_short_8: H422WOC3

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/H422WOC33FC7ENL6BQVBVQTA4P \
  | 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: 3f35ab385bd945f2357e0c2a1ac260e3ec8c530ca3349fb1752e32c8e18c9785

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d9be351f1c9276225cce1b822bba47b8e02d6d73f195bd963799d04df617ec1",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-04-18T16:07:06Z",
    "title_canon_sha256": "896165537caf45fef2c2ed0f1a2ff50a1d68cddcf9309d9a1d4ebeed3a7d6499"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.08382",
    "kind": "arxiv",
    "version": 1
  }
}