Pith Number

pith:CXEE4TU3

pith:2026:CXEE4TU35SSOFF3PXFJ32QYTSL

not attested not anchored not stored refs pending

Focal Reward: Balanced Reinforcement Learning under Rubric-Based Rewards

Feng Hong, Jiangchao Yao, Jun Zhou, Lin Yuan, Qiang Hu, Wanli Gu, Weichang Wu, Xiaolu Zhang, Xinmu Ge, Yu Huang, Zhaoxin Huan, Zihua Zhao

arxiv:2605.26579 v1 · 2026-05-26 · 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{CXEE4TU35SSOFF3PXFJ32QYTSL}

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	2026-05-27T01:05:26.936687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15c84e4e9beca4e2976fb953bd431392c073dbe9adb91d686f772230f50aea42

Aliases

arxiv: 2605.26579 · arxiv_version: 2605.26579v1 · doi: 10.48550/arxiv.2605.26579 · pith_short_12: CXEE4TU35SSO · pith_short_16: CXEE4TU35SSOFF3P · pith_short_8: CXEE4TU3

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/CXEE4TU35SSOFF3PXFJ32QYTSL \
  | 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: 15c84e4e9beca4e2976fb953bd431392c073dbe9adb91d686f772230f50aea42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06e0a0128e3dafa4cda370d4b51ce959e22cb17a3c5368d49f9bf56f89908d8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-26T05:50:46Z",
    "title_canon_sha256": "8d45839ab91ddd605fc0e62a894cbfc11cf465fb0ad5e9111686d8d502f41e46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.26579",
    "kind": "arxiv",
    "version": 1
  }
}