Pith Number

pith:N4CGYDDU

pith:2025:N4CGYDDUJ5I2Y4ISHAHVB7KZST

not attested not anchored not stored refs pending

What's Behind PPO's Collapse in Long-CoT? Value Optimization Holds the Secret

Lin Yan, Ruofei Zhu, Tiantian Fan, Yufeng Yuan, Yu Yue

arxiv:2503.01491 v1 · 2025-03-03 · 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{N4CGYDDUJ5I2Y4ISHAHVB7KZST}

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

28 papers in Pith

CompactionRL: Reinforcement Learning with Context Compaction for Long-Horizon Agents

Modularized Reinforcement Learning on LLMs: From MDP Creation to Exploration and Learning

VIMPO: Value-Implicit Policy Optimization for LLMs

Small RL Controller, Large Language Model: RL-Guided Adaptive Sampling for Test-Time Scaling

Receipt and verification

First computed	2026-07-05T10:23:08.332938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f046c0c744f51ac7112380f50fd5994eb24e195bbc1b96c2ce74cc1daf03369

Aliases

arxiv: 2503.01491 · arxiv_version: 2503.01491v1 · doi: 10.48550/arxiv.2503.01491 · pith_short_12: N4CGYDDUJ5I2 · pith_short_16: N4CGYDDUJ5I2Y4IS · pith_short_8: N4CGYDDU

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/N4CGYDDUJ5I2Y4ISHAHVB7KZST \
  | 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: 6f046c0c744f51ac7112380f50fd5994eb24e195bbc1b96c2ce74cc1daf03369

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bcdfab7ba3f13d8f4f9784d819a0dcda2d5dbbea9a92ca4acc4653badf59766",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-03-03T12:59:25Z",
    "title_canon_sha256": "917f49a5a0f0fabd246234e660e917a9f936d7d0a5fbe1bddb6d95892d1cc83a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.01491",
    "kind": "arxiv",
    "version": 1
  }
}