Pith Number

pith:VGPDYUZG

pith:2012:VGPDYUZGQ3QFV54K7RN4H5FDIW

not attested not anchored not stored refs pending

A Comparative Study of Collaborative Filtering Algorithms

Guy Lebanon, Joonseok Lee, Mingxuan Sun

arxiv:1205.3193 v1 · 2012-05-14 · cs.IR · 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{VGPDYUZGQ3QFV54K7RN4H5FDIW}

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	2026-05-18T03:55:36.680623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a99e3c532686e05af78afc5bc3f4a345a4aec7d693e7cf59692c67a559e82564

Aliases

arxiv: 1205.3193 · arxiv_version: 1205.3193v1 · doi: 10.48550/arxiv.1205.3193 · pith_short_12: VGPDYUZGQ3QF · pith_short_16: VGPDYUZGQ3QFV54K · pith_short_8: VGPDYUZG

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/VGPDYUZGQ3QFV54K7RN4H5FDIW \
  | 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: a99e3c532686e05af78afc5bc3f4a345a4aec7d693e7cf59692c67a559e82564

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0870670cf846a025768c4fc6bdf676f01eef9963a11c634e58d3b7db04a3979",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-05-14T21:08:05Z",
    "title_canon_sha256": "cc4a90cc2fa4f4b0d06c86b5ea22aff479dd62626f869e67c2e29620f78bd4b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3193",
    "kind": "arxiv",
    "version": 1
  }
}