Pith Number

pith:V3UYQNCN

pith:2026:V3UYQNCNSMPWDJ4Y2SFAUDALUE

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SRA: Span Representation Alignment for Large Language Model Distillation

Hoang Son Nguyen, Linh Ngo Van, Nguyen Thi Ngoc Diep, Pham Khanh Chi, Quoc Phong Dao, Trung Le, Tung Nguyen

SRA shifts LLM distillation alignment from tokens to attention-weighted span centers of mass for better cross-tokenizer transfer.

arxiv:2605.01205 v2 · 2026-05-02 · cs.CL

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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

In challenging cross-architecture distillation experiments, SRA consistently and significantly outperforms state-of-the-art CTKD baselines.

C2weakest assumption

That shifting the alignment unit from tokens to attention-weighted span centers of mass, under a multi-particle dynamical systems framing, produces representations that are both more robust to tokenizer mismatch and more informative for distillation than prior aggregation strategies.

C3one line summary

SRA reframes cross-tokenizer LLM distillation as alignment of attention-weighted span centers of mass in a multi-particle dynamical system and reports consistent gains over prior CTKD baselines.

Receipt and verification

First computed	2026-06-03T01:05:14.262900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aee988344d931f61a798d48a0a0c0ba12d79aefd38842a37ab602b47029ed2a2

Aliases

arxiv: 2605.01205 · arxiv_version: 2605.01205v2 · doi: 10.48550/arxiv.2605.01205 · pith_short_12: V3UYQNCNSMPW · pith_short_16: V3UYQNCNSMPWDJ4Y · pith_short_8: V3UYQNCN

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/V3UYQNCNSMPWDJ4Y2SFAUDALUE \
  | 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: aee988344d931f61a798d48a0a0c0ba12d79aefd38842a37ab602b47029ed2a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7caffba25e0399ced70ff7dd358a9b823d9cf9c25485dcf13cf3aace8a5cd998",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-02T02:44:12Z",
    "title_canon_sha256": "aac22fb6e21e389b7878b3d5d35c4bd54f2e77381ceca2f944055dc79d140399"
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  "source": {
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    "kind": "arxiv",
    "version": 2
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