Pith Number

pith:KIK5NYZL

pith:2021:KIK5NYZL7QCTBOHVJ54BOB3HED

not attested not anchored not stored refs pending

Deep Exploration for Recommendation Systems

Benjamin Van Roy, Zheqing Zhu

arxiv:2109.12509 v4 · 2021-09-26 · cs.IR · cs.AI · 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{KIK5NYZL7QCTBOHVJ54BOB3HED}

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	2026-07-05T06:35:42.272240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5215d6e32bfc0530b8f54f7817076720c28ae0654481457b6adb57f49521509c

Aliases

arxiv: 2109.12509 · arxiv_version: 2109.12509v4 · doi: 10.48550/arxiv.2109.12509 · pith_short_12: KIK5NYZL7QCT · pith_short_16: KIK5NYZL7QCTBOHV · pith_short_8: KIK5NYZL

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/KIK5NYZL7QCTBOHVJ54BOB3HED \
  | 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: 5215d6e32bfc0530b8f54f7817076720c28ae0654481457b6adb57f49521509c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eadb125aa5f7975c20c9ef5fdd7bdc4b1aada443addcd8e6de488f2d3bbf6d1",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-09-26T06:54:26Z",
    "title_canon_sha256": "bb948ad4a5ad5e5c175a4766610eb71e8261a300d351029d7bf78ecc827dd847"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12509",
    "kind": "arxiv",
    "version": 4
  }
}