Pith Number

pith:H2WOAKZ7

pith:2025:H2WOAKZ76FOVDZO323N64WTDR4

not attested not anchored not stored refs pending

Preference Optimization via Contrastive Divergence: Your Reward Model is Secretly an NLL Estimator

Fang Liu, Mohammad Ghavamzadeh, Xuan Zhu, Yanjun Qi, Zhuotong Chen

arxiv:2502.04567 v1 · 2025-02-06 · 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{H2WOAKZ76FOVDZO323N64WTDR4}

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.

Cited by

2 papers in Pith

HawkesLLM: Semantic Uncertainty Propagation in Agentic Text Simulation

DeepEyesV2: Toward Agentic Multimodal Model

Receipt and verification

First computed	2026-07-05T10:10:53.559671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eace02b3ff15d51e5dbd6dbee5a638f1b2687ead19720bb897bac5c361ae83d

Aliases

arxiv: 2502.04567 · arxiv_version: 2502.04567v1 · doi: 10.48550/arxiv.2502.04567 · pith_short_12: H2WOAKZ76FOV · pith_short_16: H2WOAKZ76FOVDZO3 · pith_short_8: H2WOAKZ7

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/H2WOAKZ76FOVDZO323N64WTDR4 \
  | 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: 3eace02b3ff15d51e5dbd6dbee5a638f1b2687ead19720bb897bac5c361ae83d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc1b28b04bb92f17469695071d1a58843f301c6fcbecd5d6e90ec1d200ead159",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-02-06T23:45:08Z",
    "title_canon_sha256": "f3db60d7a80781cf861043efb4ff1c9a8372bdac24379065be8bd5975b335325"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.04567",
    "kind": "arxiv",
    "version": 1
  }
}