Pith Number

pith:HL3UW7HJ

pith:2012:HL3UW7HJ2B5AOPEZCMTIDXANV3

not attested not anchored not stored refs pending

An MDP-based Recommender System

David Heckerman, Guy Shani, Ronen I. Brafman

arxiv:1301.0600 v2 · 2012-12-12 · cs.LG · cs.AI · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HL3UW7HJ2B5AOPEZCMTIDXANV3}

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	2026-05-18T02:07:32.501095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3af74b7ce9d07a073c99132681dc0daef928785b4baaf7058eb7a8323c68084d

Aliases

arxiv: 1301.0600 · arxiv_version: 1301.0600v2 · doi: 10.48550/arxiv.1301.0600 · pith_short_12: HL3UW7HJ2B5A · pith_short_16: HL3UW7HJ2B5AOPEZ · pith_short_8: HL3UW7HJ

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/HL3UW7HJ2B5AOPEZCMTIDXANV3 \
  | 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: 3af74b7ce9d07a073c99132681dc0daef928785b4baaf7058eb7a8323c68084d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a327ccfa2c988ee5a0454371f669ecb6c3bbc343fcd25f2155c3677b85565d3c",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-12-12T15:58:21Z",
    "title_canon_sha256": "f520efc12d32cc2565b1cffd2d2fb5c48da6b7ac905c58e2a9ffbac00ddd18c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0600",
    "kind": "arxiv",
    "version": 2
  }
}