Pith Number

pith:O64Z5DXF

pith:2025:O64Z5DXFCCYDTL6RLSU3YRJ4RZ

not attested not anchored not stored refs pending

DPO Unchained: Your Training Algorithm is Secretly Disentangled in Human Choice Theory (and its Loss' Convexity is Dispensable)

Andrew Hard, Brice Magdalou, Ehsan Amid, John Lambert, Richard Nock, Shujian Zhang, Wenxuan Zhou

arxiv:2507.07855 v4 · 2025-07-10 · cs.LG · cs.AI · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O64Z5DXFCCYDTL6RLSU3YRJ4RZ}

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	2026-06-23T03:13:46.184638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77b99e8ee510b039afd15ca9bc453c8e59cafa6cd657f5368468f8a364061d0c

Aliases

arxiv: 2507.07855 · arxiv_version: 2507.07855v4 · doi: 10.48550/arxiv.2507.07855 · pith_short_12: O64Z5DXFCCYD · pith_short_16: O64Z5DXFCCYDTL6R · pith_short_8: O64Z5DXF

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/O64Z5DXFCCYDTL6RLSU3YRJ4RZ \
  | 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: 77b99e8ee510b039afd15ca9bc453c8e59cafa6cd657f5368468f8a364061d0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4742bb624bb30ffac47b6b4e06ca003eb230615cd0d6baa30665c020c99f4e88",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-07-10T15:38:17Z",
    "title_canon_sha256": "133a594afe60225e8a07f2b91e48d218d330ccf816a2155f6375582126dc4fdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.07855",
    "kind": "arxiv",
    "version": 4
  }
}