Pith Number

pith:LFRMKKPQ

pith:2026:LFRMKKPQBRP6IPUALV32KS4O5S

not attested not anchored not stored refs pending

Tournament-GRPO: Group-Wise Tournament Rewards for Reinforcement Learning in Open-Ended Long-Form Generation

Erhan Zhang, Jiaxin Mao, Wei Yang, Xiaochi Wei, Yan Gao, Yao Hu, Yiqun Chen, Yi Wu, Zihan Shen, Zixuan Yang

arxiv:2605.26958 v1 · 2026-05-26 · 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{LFRMKKPQBRP6IPUALV32KS4O5S}

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	2026-05-27T01:06:21.637077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5962c529f00c5fe43e805d77a54b8eecbf0964220eb1111d96dc316d22da5467

Aliases

arxiv: 2605.26958 · arxiv_version: 2605.26958v1 · doi: 10.48550/arxiv.2605.26958 · pith_short_12: LFRMKKPQBRP6 · pith_short_16: LFRMKKPQBRP6IPUA · pith_short_8: LFRMKKPQ

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/LFRMKKPQBRP6IPUALV32KS4O5S \
  | 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: 5962c529f00c5fe43e805d77a54b8eecbf0964220eb1111d96dc316d22da5467

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37f11a86c8ca8a16cbf827cb99b982a7a98f6ec05b363f7dd44438b676a9adc1",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-26T12:49:19Z",
    "title_canon_sha256": "33c2bb95ba8845494b877346b1c04f33f00efd8d27c864a0b0a3636530afe2e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.26958",
    "kind": "arxiv",
    "version": 1
  }
}