Pith Number

pith:DZ53FS6O

pith:2019:DZ53FS6OIRXS54AGIDBRID4VZG

not attested not anchored not stored refs pending

Collaborative Filtering and Multi-Label Classification with Matrix Factorization

Vikas Kumar

arxiv:1907.12365 v1 · 2019-07-23 · cs.IR · cs.LG · 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{DZ53FS6OIRXS54AGIDBRID4VZG}

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	2026-07-04T23:50:07.918544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e7bb2cbce446f2ef00640c3140f95c9979ae120e1c3e6ef7d4a01ac2077ae10

Aliases

arxiv: 1907.12365 · arxiv_version: 1907.12365v1 · doi: 10.48550/arxiv.1907.12365 · pith_short_12: DZ53FS6OIRXS · pith_short_16: DZ53FS6OIRXS54AG · pith_short_8: DZ53FS6O

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/DZ53FS6OIRXS54AGIDBRID4VZG \
  | 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: 1e7bb2cbce446f2ef00640c3140f95c9979ae120e1c3e6ef7d4a01ac2077ae10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19892e2b057f744c8a128fcbe43c2355abd5407064c0ead12d76e5b7a8e51d62",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-07-23T11:39:39Z",
    "title_canon_sha256": "15d184d2957e2ced45a77365938d482386d9631d688cb3a5977f1bd544e3d095"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.12365",
    "kind": "arxiv",
    "version": 1
  }
}