Pith Number

pith:574LWMSM

pith:2026:574LWMSMGCNB5ZVRVGRPQ65D25

not attested not anchored not stored refs pending

How Neural Reward Models Learn Features for Policy Optimization: A Single-Index Analysis

Akifumi Wachi, Kohei Miyaguchi, Rei Higuchi, Ryotaro Kawata, Shokichi Takakura, Taiji Suzuki

arxiv:2605.24749 v1 · 2026-05-23 · stat.ML · 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{574LWMSMGCNB5ZVRVGRPQ65D25}

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	2026-05-26T01:03:56.317717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eff8bb324c309a1ee6b1a9a2f87ba3d7662f6f91a89dd256ec1694b80a53c4e4

Aliases

arxiv: 2605.24749 · arxiv_version: 2605.24749v1 · doi: 10.48550/arxiv.2605.24749 · pith_short_12: 574LWMSMGCNB · pith_short_16: 574LWMSMGCNB5ZVR · pith_short_8: 574LWMSM

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/574LWMSMGCNB5ZVRVGRPQ65D25 \
  | 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: eff8bb324c309a1ee6b1a9a2f87ba3d7662f6f91a89dd256ec1694b80a53c4e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3a1e8110a18ab3ba1ef4c03967d65cae0732e8299d33dda91259a683fabc5a8",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2026-05-23T22:00:38Z",
    "title_canon_sha256": "b663e3c6535e6b8f5e2f8b667cca5fdf070daefd5a8c0a0ba0fb65e1593c9d1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24749",
    "kind": "arxiv",
    "version": 1
  }
}