Pith Number

pith:RNC25EC6

pith:2025:RNC25EC6ABFWIZGC4RKQMQBFHK

not attested not anchored not stored refs pending

J4R: Learning to Judge with Equivalent Initial State Group Relative Policy Optimization

Austin Xu, Caiming Xiong, Shafiq Joty, Xuan-Phi Nguyen, Yilun Zhou

arxiv:2505.13346 v3 · 2025-05-19 · cs.CL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RNC25EC6ABFWIZGC4RKQMQBFHK}

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.

Cited by

1 paper in Pith

On the Shelf Life of Fine-Tuned LLM-Judges: Future-Proofing, Backward-Compatibility, and Question Generalization

Receipt and verification

First computed	2026-07-05T11:23:28.204913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b45ae905e004b6464c2e4550640253a8a2917f00ecb7fbbe3d0beeedab3322a

Aliases

arxiv: 2505.13346 · arxiv_version: 2505.13346v3 · doi: 10.48550/arxiv.2505.13346 · pith_short_12: RNC25EC6ABFW · pith_short_16: RNC25EC6ABFWIZGC · pith_short_8: RNC25EC6

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/RNC25EC6ABFWIZGC4RKQMQBFHK \
  | 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: 8b45ae905e004b6464c2e4550640253a8a2917f00ecb7fbbe3d0beeedab3322a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d4f366c2218bdae35bb4271891d9dee808ef008ffa271a7313f00df7799f195",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-05-19T16:50:35Z",
    "title_canon_sha256": "ccecd14f68a30d86ab2e51d69880b64da1762145ca662c83820187a97025f324"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.13346",
    "kind": "arxiv",
    "version": 3
  }
}