Pith Number

pith:7X2WC3QO

pith:2026:7X2WC3QOGBPMK2NTU7Z6JHGROH

not attested not anchored not stored refs pending

Beyond LoRA vs. Full Fine-Tuning: Gradient-Guided Optimizer Routing for LLM Adaptation

Boxun Li, Haozhan Tang, Kevin Kuo, Virginia Smith, Xinyin Zhang, Xiuqi Zhu

Gradient routing between full and LoRA tuning beats static choices

arxiv:2605.07111 v2 · 2026-05-08 · cs.CL · cs.AI

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\usepackage{pith}
\pithnumber{7X2WC3QOGBPMK2NTU7Z6JHGROH}

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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

Our evaluations show that MoLF either improves on or stays within 1.5% of the better of FFT and LoRA across all settings, while MoLF-Efficient outperforms prior adaptive LoRA approaches by up to 20% on Fact and 9% on Med and SQL.

C2weakest assumption

That gradient-guided routing at the optimizer level will produce stable training dynamics and that the observed performance gains on the tested models and tasks will hold for other LLMs and domains.

C3one line summary

MoLF routes updates between full fine-tuning and LoRA at the optimizer level to match or exceed the better of either static method, with an efficient LoRA-only variant outperforming prior adaptive approaches.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:04:34.544123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdf5616e0e305ec569b3a7f3e49cd171d4fecd9ccf93f69aa1767c03d5dea13a

Aliases

arxiv: 2605.07111 · arxiv_version: 2605.07111v2 · doi: 10.48550/arxiv.2605.07111 · pith_short_12: 7X2WC3QOGBPM · pith_short_16: 7X2WC3QOGBPMK2NT · pith_short_8: 7X2WC3QO

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/7X2WC3QOGBPMK2NTU7Z6JHGROH \
  | 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: fdf5616e0e305ec569b3a7f3e49cd171d4fecd9ccf93f69aa1767c03d5dea13a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e5bf3075d2e1b68b45eb49719ba7ea8b7e781e48d2aac672b64f638cb815090",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-08T01:38:58Z",
    "title_canon_sha256": "103e0cf8c60a2787cbd5b3f86bad6499148fd2bfa103ee1f751146f704ee3b64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.07111",
    "kind": "arxiv",
    "version": 2
  }
}