Pith Number

pith:DL6ZPSHZ

pith:2025:DL6ZPSHZVPQ7OEZNTKPDAQ7PRP

not attested not anchored not stored refs pending

Echo Chamber: RL Post-training Amplifies Behaviors Learned in Pretraining

Alexandru Meterez, Cengiz Pehlevan, Eran Malach, Rosie Zhao, Samy Jelassi, Sham Kakade

arxiv:2504.07912 v2 · 2025-04-10 · 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{DL6ZPSHZVPQ7OEZNTKPDAQ7PRP}

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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

13 papers in Pith

RL Post-Training Builds Compositional Reasoning Strategies

How Much Thinking is Enough? Quantifying and Understanding Redundancy in LLM Reasoning

From Reasoning Traces to Reusable Modules: Understanding Compositional Generalization in Language Model Reasoning

Blending Supervised and Reinforcement Fine-Tuning with Prefix Sampling

Reasoning Can Be Restored by Correcting a Few Decision Tokens

Receipt and verification

First computed	2026-07-05T11:50:34.744929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1afd97c8f9abe1f7132d9a9e3043ef8bd5bb338d8395e4c3b36e5b12e9e33bc7

Aliases

arxiv: 2504.07912 · arxiv_version: 2504.07912v2 · doi: 10.48550/arxiv.2504.07912 · pith_short_12: DL6ZPSHZVPQ7 · pith_short_16: DL6ZPSHZVPQ7OEZN · pith_short_8: DL6ZPSHZ

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/DL6ZPSHZVPQ7OEZNTKPDAQ7PRP \
  | 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: 1afd97c8f9abe1f7132d9a9e3043ef8bd5bb338d8395e4c3b36e5b12e9e33bc7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "128fb98abdc797a795d1e257d3d6a5108fa02c8d26a07a0fba6363de3085e9c0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-04-10T17:15:53Z",
    "title_canon_sha256": "684bdfc6b6b1c1e5c60246b2651a7a891449d5476f6f405cdfef109dab6296a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.07912",
    "kind": "arxiv",
    "version": 2
  }
}