Pith Number

pith:PVNWUVEC

pith:2026:PVNWUVECPH7PJGXR5SMPG2JAJD

not attested not anchored not stored refs pending

ECHO: Entropy-Confidence Hybrid Optimization for Test-Time Reinforcement Learning

Chu Zhao, Enneng Yang, Guibing Guo, Jianzhe Zhao, Yuting Liu

arxiv:2602.02150 v2 · 2026-02-02 · cs.LG · 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{PVNWUVECPH7PJGXR5SMPG2JAJD}

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

1 paper in Pith

Maximizing Rollout Informativeness under a Fixed Budget: A Submodular View of Tree Search for Tool-Use Agentic Reinforcement Learning

Receipt and verification

First computed	2026-05-28T02:04:45.778136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d5b6a548279fef49af1ec98f3692048d56edc857dd31437adfd217614b993bb

Aliases

arxiv: 2602.02150 · arxiv_version: 2602.02150v2 · doi: 10.48550/arxiv.2602.02150 · pith_short_12: PVNWUVECPH7P · pith_short_16: PVNWUVECPH7PJGXR · pith_short_8: PVNWUVEC

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/PVNWUVECPH7PJGXR5SMPG2JAJD \
  | 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: 7d5b6a548279fef49af1ec98f3692048d56edc857dd31437adfd217614b993bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e3df331c84a22c0e166e12b7f9c3c2ec84cdf6186019a51c1d32fe62b3b2fbb",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-02-02T14:27:02Z",
    "title_canon_sha256": "5d9a3d3bf41b269ac0afa1e79776a35d0ad6d120e3457c032cfdbf72f5a8ee03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.02150",
    "kind": "arxiv",
    "version": 2
  }
}