Pith Number

pith:NCTMZTG4

pith:2026:NCTMZTG4ELO2X5XKFNLZ66NDNX

not attested not anchored not stored refs pending

Sparse Mixture-of-Experts Reward Models Learn Interpretable and Specialized Experts for Personalized Preference Modeling

Isabel Valera, Jinyi Mu, Ji-Ung Lee, Mayank Jobanputra, Soyoung Oh, Vera Demberg, Yifan Wang, Yu Wang

arxiv:2606.04284 v1 · 2026-06-02 · cs.LG · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NCTMZTG4ELO2X5XKFNLZ66NDNX}

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	2026-06-04T01:09:02.018670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68a6ccccdc22ddabf6ea2b579f79a36dec4bd91ea43994e497b73fd028980578

Aliases

arxiv: 2606.04284 · arxiv_version: 2606.04284v1 · doi: 10.48550/arxiv.2606.04284 · pith_short_12: NCTMZTG4ELO2 · pith_short_16: NCTMZTG4ELO2X5XK · pith_short_8: NCTMZTG4

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/NCTMZTG4ELO2X5XKFNLZ66NDNX \
  | 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: 68a6ccccdc22ddabf6ea2b579f79a36dec4bd91ea43994e497b73fd028980578

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "597def73a0fb4974fe3c38678c928e1c94625e63a514933a407798daa6b020d9",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-02T23:19:12Z",
    "title_canon_sha256": "8fcab7f340a77168d87e02ca70caf842d3bfa0bb7c466d10b4d7e24f243461a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.04284",
    "kind": "arxiv",
    "version": 1
  }
}