Pith Number

pith:3W4NRXBB

pith:2026:3W4NRXBBQYDALFZEXJ7M4W3ELF

not attested not anchored not stored refs pending

EAPO: Entropy-Driven Adaptive Positive-Negative Sample Weighting for Policy Optimization in Open-Ended QA

Bo Yuan, Gen Li, Jianwei Lv, Junfeng Wang, Luning Wang, Siyu Chen, Xiandong Li, Yujin Wang, Yunhao Qiao, Yunsheng Zeng, Yuwei Miao

arxiv:2605.27846 v1 · 2026-05-27 · 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{3W4NRXBBQYDALFZEXJ7M4W3ELF}

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	2026-05-28T01:04:50.306873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddb8d8dc218606059724ba7ece5b645964446b58956dfaa633c041a7dcbfbae8

Aliases

arxiv: 2605.27846 · arxiv_version: 2605.27846v1 · doi: 10.48550/arxiv.2605.27846 · pith_short_12: 3W4NRXBBQYDA · pith_short_16: 3W4NRXBBQYDALFZE · pith_short_8: 3W4NRXBB

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/3W4NRXBBQYDALFZEXJ7M4W3ELF \
  | 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: ddb8d8dc218606059724ba7ece5b645964446b58956dfaa633c041a7dcbfbae8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d7c852bebf3ff4dfff12a47772bda5619009a65f4a0e5682fb59e88f2b7d383",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-27T02:04:00Z",
    "title_canon_sha256": "f8127510d0366adec4b585060cbaa5921866630f0e66390efa5379557b781add"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.27846",
    "kind": "arxiv",
    "version": 1
  }
}