Pith Number

pith:SAD3VLBW

pith:2026:SAD3VLBWBP2QX2Z6F5O3JEXDEI

not attested not anchored not stored refs pending

When In-Distribution Gains Fail: Evaluating Weak-to-Strong Reward Models under Preference Shift

Anh Tuan Luu, Cong-Duy Nguyen, Khoi Le, Miao Chunyan, Phong Nguyen, See-kiong Ng, Thong Nguyen, Tri Cao

arxiv:2605.25629 v1 · 2026-05-25 · cs.CL · 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{SAD3VLBWBP2QX2Z6F5O3JEXDEI}

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	2026-05-26T02:04:47.275821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9007baac360bf50beb3e2f5db492e322302febdf125e5db9c3c44a55b46329b2

Aliases

arxiv: 2605.25629 · arxiv_version: 2605.25629v1 · doi: 10.48550/arxiv.2605.25629 · pith_short_12: SAD3VLBWBP2Q · pith_short_16: SAD3VLBWBP2QX2Z6 · pith_short_8: SAD3VLBW

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/SAD3VLBWBP2QX2Z6F5O3JEXDEI \
  | 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: 9007baac360bf50beb3e2f5db492e322302febdf125e5db9c3c44a55b46329b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aee6572a9d7cffc2dd11ba39cfb9ee20a9168bb047b7cb6e14bf266fb6af11ae",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-25T09:30:49Z",
    "title_canon_sha256": "7303dda99b4f2611f3bbc2a7ffe49fac1d14734dbf1b716bdf61961d9af878f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.25629",
    "kind": "arxiv",
    "version": 1
  }
}