Pith Number

pith:22XURPEF

pith:2026:22XURPEFGAH4RGA4TZDH6BOG46

not attested not anchored not stored refs resolved

Minimal-Intervention KV Retention: A Design-Space Study and a Diversity-Penalty Survivor

Libo Sun, Peixiong He, Po-Wei Harn, Xiao Qin

A one-function change adding a diversity penalty to the KV retention scorer outperforms seven other compression methods on mathematical reasoning at small budgets.

arxiv:2605.14292 v1 · 2026-05-14 · cs.LG · cs.CL

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

With λ = 0.5, α clears Bonferroni on two of the four (model, budget) cells (Qwen b=128 and Llama b=64), no cell is significantly negative, and the pre-registered Branch A triggers.

C2weakest assumption

That the pre-registered tuning on the development split and confirmation on the held-out split of MATH-500 with these two specific models generalizes beyond the tested regime and tasks.

C3one line summary

A one-function modification to the TriAttention retention scorer using greedy selection under a V-space redundancy penalty outperforms seven matched mechanisms on long-form math reasoning at budgets 64 and 128.

References

28 extracted · 28 resolved · 0 Pith anchors

[1] LongBench: A bilingual, multitask benchmark for long context understanding 2024

[2] Accounting for variance in machine learning benchmarks 2021

[3] Kelly, J. R. Reducing transformer key-value cache size with cross-layer attention, 2024 2024

[4] PyramidKV: Dynamic KV cache compression based on pyramidal information funneling, 2024 2024

[5] R-KV: Redundancy-aware KV cache compression for reasoning models 2025

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-17T23:39:10.187767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6af48bc85300fc8981c9e467f05c6e7b672b3fece6aa6aab0b8fea7b439024b

Aliases

arxiv: 2605.14292 · arxiv_version: 2605.14292v1 · doi: 10.48550/arxiv.2605.14292 · pith_short_12: 22XURPEFGAH4 · pith_short_16: 22XURPEFGAH4RGA4 · pith_short_8: 22XURPEF

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/22XURPEFGAH4RGA4TZDH6BOG46 \
  | 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: d6af48bc85300fc8981c9e467f05c6e7b672b3fece6aa6aab0b8fea7b439024b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d5e25bb07ad90108ba2f3c1e85e157eb494bc4ef58bfac217bf4db9a51bad50",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-14T02:50:20Z",
    "title_canon_sha256": "48db189b73d8a297a185b5d4cdb5c4b40855d810f55f09ca0e1d93235d855602"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14292",
    "kind": "arxiv",
    "version": 1
  }
}