Pith Number

pith:S7YLQ4NQ

pith:2026:S7YLQ4NQ3VFL7JO46XBLN6CWC3

not attested not anchored not stored refs pending

Short Chains, Deep Thoughts: Balancing Reasoning Efficiency and Intra-Segment Capability via Split-Merge Optimization

Chi Ma, Feng Wu, Jianye Hao, Jie Wang, Runquan Gui, Zhihai Wang

CoSMo refines long reasoning chains by merging redundancies and splitting gaps, raising accuracy while cutting segment count.

arxiv:2602.03141 v4 · 2026-02-03 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S7YLQ4NQ3VFL7JO46XBLN6CWC3}

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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.

Claims

C1strongest claim

CoSMo achieves superior performance, improving accuracy by 3.3 points while reducing segment usage by 28.7% on average compared to reasoning efficiency baselines.

C2weakest assumption

The split-merge algorithm can reliably detect redundant segments and logical gaps in generated reasoning chains and repair them without introducing new errors or losing necessary intermediate steps.

C3one line summary

CoSMo shortens reasoning chains by 28.7% on average and raises accuracy by 3.3 points via consistency-guided split-merge optimization plus structure-aligned RL with segment budgets.

Receipt and verification

First computed	2026-06-11T01:09:28.409433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97f0b871b0dd4abfa5dcf5c2b6f85616f28aaaa7dba0a04cfa4be865fca5307e

Aliases

arxiv: 2602.03141 · arxiv_version: 2602.03141v4 · doi: 10.48550/arxiv.2602.03141 · pith_short_12: S7YLQ4NQ3VFL · pith_short_16: S7YLQ4NQ3VFL7JO4 · pith_short_8: S7YLQ4NQ

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/S7YLQ4NQ3VFL7JO46XBLN6CWC3 \
  | 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: 97f0b871b0dd4abfa5dcf5c2b6f85616f28aaaa7dba0a04cfa4be865fca5307e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec46323c24bb172735642a97310a4cdf0c6dfb0e8ae8a515a7d2eed6566b9ad5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-02-03T05:54:28Z",
    "title_canon_sha256": "34dabda0ec4b083ec6ddfb500bf1b0dc2009c835ce2b55e8f92815d0de09e0d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.03141",
    "kind": "arxiv",
    "version": 4
  }
}