Pith Number

pith:7GL2P7CD

pith:2012:7GL2P7CDF5N2YQLXT7442OXKAT

not attested not anchored not stored refs pending

Active Collaborative Filtering

Benjamin Marlin, Craig Boutilier, Richard S. Zemel

arxiv:1212.2442 v1 · 2012-10-19 · 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{7GL2P7CDF5N2YQLXT7442OXKAT}

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	2026-05-18T03:38:44.928579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f997a7fc432f5bac41779ff9cd3aea04fed4be0a4dda54856a87b00b91ac3e00

Aliases

arxiv: 1212.2442 · arxiv_version: 1212.2442v1 · doi: 10.48550/arxiv.1212.2442 · pith_short_12: 7GL2P7CDF5N2 · pith_short_16: 7GL2P7CDF5N2YQLX · pith_short_8: 7GL2P7CD

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/7GL2P7CDF5N2YQLXT7442OXKAT \
  | 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: f997a7fc432f5bac41779ff9cd3aea04fed4be0a4dda54856a87b00b91ac3e00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3a448339121350d2e8ab4a4b1953ee5138f5dd8de103b07896fef6790855349",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-10-19T15:04:12Z",
    "title_canon_sha256": "1779ecba9a85fc2b366c663397d81de404f0d65f8abef6d0fb24f60848ec401d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2442",
    "kind": "arxiv",
    "version": 1
  }
}