Pith Number

pith:HD67Y2Q6

pith:2026:HD67Y2Q6AZH4N7PMEJYDE73IA2

not attested not anchored not stored refs pending

CoFEH: LLM-driven Feature Engineering Empowered by Collaborative Bayesian Hyperparameter Optimization

Beicheng Xu, Bin Cui, Keyao Ding, Wei Liu, Yupeng Lu

arxiv:2602.09851 v2 · 2026-02-10 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HD67Y2Q6AZH4N7PMEJYDE73IA2}

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	2026-05-22T01:04:54.922785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38fdfc6a1e064fc6fdec2270327f680685afde929662eb7f5ac33ae669bd2104

Aliases

arxiv: 2602.09851 · arxiv_version: 2602.09851v2 · doi: 10.48550/arxiv.2602.09851 · pith_short_12: HD67Y2Q6AZH4 · pith_short_16: HD67Y2Q6AZH4N7PM · pith_short_8: HD67Y2Q6

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/HD67Y2Q6AZH4N7PMEJYDE73IA2 \
  | 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: 38fdfc6a1e064fc6fdec2270327f680685afde929662eb7f5ac33ae669bd2104

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e85d7f9078a8ee549db973ce3b9b87fc8a84f410614e76e9ec9e7da70abe9dcd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-02-10T14:54:17Z",
    "title_canon_sha256": "4366e09efa096586b64d5158d404bddd6507cae4a9f0a123022aa71204e6f7f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.09851",
    "kind": "arxiv",
    "version": 2
  }
}