Pith Number

pith:DLP3E76C

pith:2022:DLP3E76CUMNR6HW3VSZXKJ65RV

not attested not anchored not stored refs pending

Semi-supervised Nonnegative Matrix Factorization for Document Classification

Alona Kryshchenko, Chuntian Wang, Deanna Needell, Elena Sizikova, Jamie Haddock, Kathryn Leonard, Lara Kassab, Miju Ahn, Rachel Grotheer, RWMA Madushani, Sixian Li, Thomas Merkh

arxiv:2203.03551 v1 · 2022-02-28 · cs.IR · cs.LG · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLP3E76CUMNR6HW3VSZXKJ65RV}

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	2026-07-05T04:02:35.527547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1adfb27fc2a31b1f1edbacb37527dd8d5ea953dd33a9d3c060439c6b9b7675c5

Aliases

arxiv: 2203.03551 · arxiv_version: 2203.03551v1 · doi: 10.48550/arxiv.2203.03551 · pith_short_12: DLP3E76CUMNR · pith_short_16: DLP3E76CUMNR6HW3 · pith_short_8: DLP3E76C

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/DLP3E76CUMNR6HW3VSZXKJ65RV \
  | 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: 1adfb27fc2a31b1f1edbacb37527dd8d5ea953dd33a9d3c060439c6b9b7675c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e214a03f4d46edbc32cae8374d07f841c27b5a40376f370e401f7b7c734bed6",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2022-02-28T19:00:49Z",
    "title_canon_sha256": "c959a0e35690df71990a13073ef02e99ee9a02c9be3b9041c6e927b8b5819afd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.03551",
    "kind": "arxiv",
    "version": 1
  }
}