Pith Number

pith:RBGUYHS6

pith:2026:RBGUYHS6HQYBM4X6ASB7TTQAT2

not attested not anchored not stored refs pending

MedLayBench-V: A Large-Scale Benchmark for Expert-Lay Semantic Alignment in Medical Vision Language Models

Han Jang, Heeseong Eum, Junhyeok Lee, Kyu Sung Choi

MedLayBench-V introduces the first large-scale benchmark for expert-lay semantic alignment in medical vision-language models.

arxiv:2604.05738 v2 · 2026-04-07 · cs.CL

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\usepackage{pith}
\pithnumber{RBGUYHS6HQYBM4X6ASB7TTQAT2}

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Record completeness

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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

we introduce MedLayBench-V, the first large-scale multimodal benchmark dedicated to expert-lay semantic alignment. ... constructed via a Structured Concept-Grounded Refinement (SCGR) pipeline. This method enforces strict semantic equivalence by integrating Unified Medical Language System (UMLS) Concept Unique Identifiers (CUIs) with micro-level entity constraints.

C2weakest assumption

That the SCGR pipeline, by integrating UMLS CUIs with micro-level entity constraints, will enforce strict semantic equivalence between expert and lay descriptions without information loss, hallucination, or incomplete coverage of medical concepts.

C3one line summary

MedLayBench-V is the first large-scale multimodal benchmark for expert-lay semantic alignment in medical vision-language models, constructed via a Structured Concept-Grounded Refinement pipeline that uses UMLS CUIs to enforce equivalence.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-25T01:17:52.889264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

884d4c1e5e3c301672fe0483f9ce009e890b72f751b506f321397513ebea427b

Aliases

arxiv: 2604.05738 · arxiv_version: 2604.05738v2 · doi: 10.48550/arxiv.2604.05738 · pith_short_12: RBGUYHS6HQYB · pith_short_16: RBGUYHS6HQYBM4X6 · pith_short_8: RBGUYHS6

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/RBGUYHS6HQYBM4X6ASB7TTQAT2 \
  | 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: 884d4c1e5e3c301672fe0483f9ce009e890b72f751b506f321397513ebea427b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d01378021905cd301b2bf85640028a6db59a922418f11804523ef31eed4495f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-04-07T11:39:41Z",
    "title_canon_sha256": "6fda5aa09824ce76fb521ad8bd2a625c824ab973caa211793ee67ad216fc5b56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.05738",
    "kind": "arxiv",
    "version": 2
  }
}