Pith Number

pith:6HV7V3EK

pith:2026:6HV7V3EKJ23QU743QDRQLSTLK2

not attested not anchored not stored refs pending

Improving Heart-Focused Medical Question Answering in LLMs via Variance-Aware Rubric Rewards with GRPO

Arash Ahmadi, Charles Nicholson, David Ebert, Mike Banad, Parisa Masnadi, Sarah Sharif

arxiv:2606.05174 v1 · 2026-04-17 · cs.CL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6HV7V3EKJ23QU743QDRQLSTLK2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-06-05T00:13:47.730302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1ebfaec8a4eb70a7f9b80e305ca6b56b30708ed145f58413e119c6c2bf870db

Aliases

arxiv: 2606.05174 · arxiv_version: 2606.05174v1 · doi: 10.48550/arxiv.2606.05174 · pith_short_12: 6HV7V3EKJ23Q · pith_short_16: 6HV7V3EKJ23QU743 · pith_short_8: 6HV7V3EK

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/6HV7V3EKJ23QU743QDRQLSTLK2 \
  | 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: f1ebfaec8a4eb70a7f9b80e305ca6b56b30708ed145f58413e119c6c2bf870db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8b73403ecf612af3d033753237ac67b4c58609268631dbf7a23cd45a5c11d3b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-04-17T03:08:55Z",
    "title_canon_sha256": "96c16a3e0c9453e21cd814080ae58b71784b6647e48be250144490a57a1350f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05174",
    "kind": "arxiv",
    "version": 1
  }
}