Pith Number

pith:R6APKS7T

pith:2026:R6APKS7T34X7NKFOYYN5A6CNVD

not attested not anchored not stored refs pending

Gradient Regularization Mitigates Reward Hacking in Reinforcement Learning from Human Feedback and Verifiable Rewards

Johannes Ackermann, Masashi Sugiyama, Michael Noukhovitch, Takashi Ishida

arxiv:2602.18037 v2 · 2026-02-20 · cs.LG · cs.AI · cs.CL

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

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\usepackage{pith}
\pithnumber{R6APKS7T34X7NKFOYYN5A6CNVD}

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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

Beyond One-Size-Fits-All: Diagnosis-Driven Online Reinforcement Learning with Offline Priors

Directional Alignment Mitigates Reward Hacking in Reinforcement Learning for Language Models

Receipt and verification

First computed	2026-07-07T00:15:52.603114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f80f54bf3df2ff6a8aec61bd0784da8ef0c8a0f060c2524ed25fcc582aa2e80

Aliases

arxiv: 2602.18037 · arxiv_version: 2602.18037v2 · doi: 10.48550/arxiv.2602.18037 · pith_short_12: R6APKS7T34X7 · pith_short_16: R6APKS7T34X7NKFO · pith_short_8: R6APKS7T

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/R6APKS7T34X7NKFOYYN5A6CNVD \
  | 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: 8f80f54bf3df2ff6a8aec61bd0784da8ef0c8a0f060c2524ed25fcc582aa2e80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4132ef63275c09cf4a368e95f371a762ba9a20ee2aec859a848c05f2386ddee6",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-02-20T07:32:22Z",
    "title_canon_sha256": "016d3b075de16b680a5ccb96eac499c6725bb6a10992f4fc17c241d1eb0fe789"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.18037",
    "kind": "arxiv",
    "version": 2
  }
}