Pith Number

pith:JMVPWCFN

pith:2026:JMVPWCFNZX2FJ2SB3FF3KD6OZ6

not attested not anchored not stored refs pending

Direct Preference Optimization for Chatbot Fine-Tuning: An Empirical Study

Dezhi YU, ShuoJia Fu, Yvonne Qiu

arxiv:2606.12881 v1 · 2026-06-11 · 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{JMVPWCFNZX2FJ2SB3FF3KD6OZ6}

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	2026-06-12T01:08:56.488148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b2afb08adcdf454ea41d94bb50fcecfbd2f82ebf277815360bbf5ddb8e03c6a

Aliases

arxiv: 2606.12881 · arxiv_version: 2606.12881v1 · doi: 10.48550/arxiv.2606.12881 · pith_short_12: JMVPWCFNZX2F · pith_short_16: JMVPWCFNZX2FJ2SB · pith_short_8: JMVPWCFN

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/JMVPWCFNZX2FJ2SB3FF3KD6OZ6 \
  | 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: 4b2afb08adcdf454ea41d94bb50fcecfbd2f82ebf277815360bbf5ddb8e03c6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02316652f8764e048634be42e2af5ff22aa378a7ce8f922a76e913f44d261e67",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-06-11T04:15:54Z",
    "title_canon_sha256": "1837fea65420d83284d2e77e742a5aafa2a6c30eb82046094e35a0dd34114558"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12881",
    "kind": "arxiv",
    "version": 1
  }
}