Pith Number

pith:AG3TGOR2

pith:2018:AG3TGOR2TMRPRPJLCGA2P46YGO

not attested not anchored not stored refs pending

Regularizing Matrix Factorization with User and Item Embeddings for Recommendation

Dongwon Lee, Kyumin Lee, Thanh Tran, Yiming Liao

arxiv:1809.00979 v1 · 2018-08-31 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AG3TGOR2TMRPRPJLCGA2P46YGO}

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	2026-05-18T00:06:32.001329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01b7333a3a9b22f8bd2b1181a7f3d8339a85f2d4f7d0bce7097bb1e6724c003a

Aliases

arxiv: 1809.00979 · arxiv_version: 1809.00979v1 · doi: 10.48550/arxiv.1809.00979 · pith_short_12: AG3TGOR2TMRP · pith_short_16: AG3TGOR2TMRPRPJL · pith_short_8: AG3TGOR2

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/AG3TGOR2TMRPRPJLCGA2P46YGO \
  | 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: 01b7333a3a9b22f8bd2b1181a7f3d8339a85f2d4f7d0bce7097bb1e6724c003a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62019ce4e13fc942730950bae34c9c805fc8e099dbba25b9f67a2e7a209ad8a8",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-08-31T05:47:40Z",
    "title_canon_sha256": "28641ee00d8e1326e89dfc1797a49e2ec7a00accd90c73b291b39d51abcc241d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.00979",
    "kind": "arxiv",
    "version": 1
  }
}