Pith Number

pith:H4IELT26

pith:2026:H4IELT26RZSIVSDPZZL3ZEVLQH

not attested not anchored not stored refs pending

Reinforced Preference Optimization for Reasoning-Augmented Recommendations

Chi Lu, Derong Xu, Jingtong Gao, Kun Gai, Maolin Wang, Peng Jiang, Qingpeng Cai, Xiangyu Zhao, Xiaopeng Li, Zeyu Song

arxiv:2605.21967 v1 · 2026-05-21 · 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{H4IELT26RZSIVSDPZZL3ZEVLQH}

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	2026-05-22T01:04:17.622280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f1045cf5e8e648ac86fce57bc92ab81cfede55745571ff7fd565beacb5de59d

Aliases

arxiv: 2605.21967 · arxiv_version: 2605.21967v1 · doi: 10.48550/arxiv.2605.21967 · pith_short_12: H4IELT26RZSI · pith_short_16: H4IELT26RZSIVSDP · pith_short_8: H4IELT26

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/H4IELT26RZSIVSDPZZL3ZEVLQH \
  | 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: 3f1045cf5e8e648ac86fce57bc92ab81cfede55745571ff7fd565beacb5de59d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8fcd440f7f3227ae4bde0375425cc79bcc8b8466890fa2c48b267ee5b89238a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-05-21T03:56:42Z",
    "title_canon_sha256": "cd9d34e396ce55c0cc5765741ec66f439fefc4f3d7539986910249e5242b9e64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21967",
    "kind": "arxiv",
    "version": 1
  }
}