Pith Number

pith:H6X5JD7H

pith:2025:H6X5JD7HZ4KFJ6G5FX3PQMLSOR

not attested not anchored not stored refs pending

Deep Reinforcement Learning for Ranking Utility Tuning in the Ad Recommender System at Pinterest

Abe Engle, Charles Rosenberg, Fan Zhou, Jiajing Xu, Jinfeng Zhuang, Ling Leng, Longyu Zhao, Mehdi Ben Ayed, Prathibha Deshikachar, Xiao Yang, Yuchen Shen

arxiv:2509.05292 v1 · 2025-09-05 · 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{H6X5JD7HZ4KFJ6G5FX3PQMLSOR}

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	2026-07-05T12:05:38.965532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fafd48fe7cf1454f8dd2df6f83172745fa875f6ed31b5a76bf40e009cbac0a8

Aliases

arxiv: 2509.05292 · arxiv_version: 2509.05292v1 · doi: 10.48550/arxiv.2509.05292 · pith_short_12: H6X5JD7HZ4KF · pith_short_16: H6X5JD7HZ4KFJ6G5 · pith_short_8: H6X5JD7H

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/H6X5JD7HZ4KFJ6G5FX3PQMLSOR \
  | 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: 3fafd48fe7cf1454f8dd2df6f83172745fa875f6ed31b5a76bf40e009cbac0a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82bfca405b49e1c488379322f4d233510a63b51b30d17ecd6e43a85da81e23cd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-09-05T17:57:45Z",
    "title_canon_sha256": "4e8c8c4eddcd0df384746fcb1fac70675b4f3d22582d0a6c2764dfa1ed45f5bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.05292",
    "kind": "arxiv",
    "version": 1
  }
}