Pith Number

pith:BVSY6CPC

pith:2026:BVSY6CPCP44NATVJ3SJROMETWK

not attested not anchored not stored refs pending

ReCo: Reweighting GRPO Against Distributional Concentration

Junoh Park, Junseo Hwang, Taesup Kim, Wonguk Cho

arxiv:2607.26862 v1 · 2026-07-29 · cs.LG · 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{BVSY6CPCP44NATVJ3SJROMETWK}

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	2026-07-30T01:22:33.501976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

0d658f09e27f38d04ea9dc93173093b2b1a97b7d88eb74c60af565f0860b7645

Aliases

arxiv: 2607.26862 · arxiv_version: 2607.26862v1 · doi: 10.48550/arxiv.2607.26862 · pith_short_12: BVSY6CPCP44N · pith_short_16: BVSY6CPCP44NATVJ · pith_short_8: BVSY6CPC

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/BVSY6CPCP44NATVJ3SJROMETWK \
  | 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: 0d658f09e27f38d04ea9dc93173093b2b1a97b7d88eb74c60af565f0860b7645

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be2e9d7010393060dada23af3ddec99aa7b898f6691973ad09370826efd3a09f",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-29T12:45:55Z",
    "title_canon_sha256": "62078b236cb84ebb7781832b7d95203310fe3583925777155166de5d00de1941"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.26862",
    "kind": "arxiv",
    "version": 1
  }
}