Pith Number

pith:3VSGEROB

pith:2018:3VSGEROBRR6MVBP56YTTA4UTA7

not attested not anchored not stored refs pending

Optimization Matrix Factorization Recommendation Algorithm Based on Rating Centrality

Hui Tian, Shuo Wang, Xuzhen Zhu, Zhipeng Wu

arxiv:1806.07678 v1 · 2018-06-20 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3VSGEROBRR6MVBP56YTTA4UTA7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:12:37.678418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd646245c18c7cca85fdf62730729307ef226a8e703c7cdab0cc189ca0c321c4

Aliases

arxiv: 1806.07678 · arxiv_version: 1806.07678v1 · doi: 10.48550/arxiv.1806.07678 · pith_short_12: 3VSGEROBRR6M · pith_short_16: 3VSGEROBRR6MVBP5 · pith_short_8: 3VSGEROB

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/3VSGEROBRR6MVBP56YTTA4UTA7 \
  | 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: dd646245c18c7cca85fdf62730729307ef226a8e703c7cdab0cc189ca0c321c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b7b08ad4ebccb8842546936a742e55560e9a6b8f7f332000fa65a167a1ad1cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-06-20T11:56:04Z",
    "title_canon_sha256": "ed4958413795918e48ef15c156ba3deb6d43d8dab4b01dfded177381f2d4746f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07678",
    "kind": "arxiv",
    "version": 1
  }
}