Pith Number

pith:AY5FQMPQ

pith:2012:AY5FQMPQ24U32JFGGSMQUVNN63

not attested not anchored not stored refs pending

Content-boosted Matrix Factorization Techniques for Recommender Systems

Jennifer Nguyen, Mu Zhu

arxiv:1210.5631 v2 · 2012-10-20 · stat.ML · 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{AY5FQMPQ24U32JFGGSMQUVNN63}

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	2026-05-18T03:16:29.053892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

063a5831f0d729bd24a634990a55adf6cb24cdf2bbf20503c209ecc376dfa581

Aliases

arxiv: 1210.5631 · arxiv_version: 1210.5631v2 · doi: 10.48550/arxiv.1210.5631 · pith_short_12: AY5FQMPQ24U3 · pith_short_16: AY5FQMPQ24U32JFG · pith_short_8: AY5FQMPQ

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/AY5FQMPQ24U32JFGGSMQUVNN63 \
  | 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: 063a5831f0d729bd24a634990a55adf6cb24cdf2bbf20503c209ecc376dfa581

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69bfb08791757284815ffca4f3b4f5ae03f51bd041422c7d862d4d51ce73d3d7",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-10-20T14:39:39Z",
    "title_canon_sha256": "1f5fdad91c0617f4e0c9e928931945e38da2f0cb26cb4926ee3d961a772a4398"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5631",
    "kind": "arxiv",
    "version": 2
  }
}