Pith Number

pith:6DVK2FC5

pith:2025:6DVK2FC5OGAR44MRQPHYUJLEHS

not attested not anchored not stored refs pending

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems

Eiji Uchibe, Mitsuki Sakamoto, Ryota Mitsuhashi, Tetsuro Morimura, Yuki Ichihara, Yuu Jinnai

arxiv:2509.22047 v3 · 2025-09-26 · 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{6DVK2FC5OGAR44MRQPHYUJLEHS}

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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

3 papers in Pith

LC-ERD: Mining Latent Logic for Self-Evolving Reasoning via Consistency-Regulated Reward Decomposition

CAT-Translate: Building Compact Open-Source Models for Japanese-English Translation

Signal Reshaping for GRPO in Weak-Feedback Agentic Code Repair

Receipt and verification

First computed	2026-07-24T00:23:04.866259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0eaad145d71811e719183cf8a25643caf8aeeeff2d2e1757e508e941e32305f

Aliases

arxiv: 2509.22047 · arxiv_version: 2509.22047v3 · doi: 10.48550/arxiv.2509.22047 · pith_short_12: 6DVK2FC5OGAR · pith_short_16: 6DVK2FC5OGAR44MR · pith_short_8: 6DVK2FC5

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/6DVK2FC5OGAR44MRQPHYUJLEHS \
  | 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: f0eaad145d71811e719183cf8a25643caf8aeeeff2d2e1757e508e941e32305f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b74c7364e472fc32b0a569218e22ab7952e1c00617d38fd4f1e2713b5a448ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-09-26T08:32:22Z",
    "title_canon_sha256": "304fb937b48591c81854ed2f9fb27f8272b3f074cf673301ca9101ab6443c316"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.22047",
    "kind": "arxiv",
    "version": 3
  }
}