Pith Number

pith:TGD2Z5T6

pith:2019:TGD2Z5T64Y7TMP2B6NLZTGCUJF

not attested not anchored not stored refs pending

A XGBoost risk model via feature selection and Bayesian hyper-parameter optimization

Xuelei Sherry Ni, Yan Wang

arxiv:1901.08433 v1 · 2019-01-24 · stat.ML · 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{TGD2Z5T64Y7TMP2B6NLZTGCUJF}

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	2026-05-17T23:55:35.460854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9987acf67ee63f363f41f357999854494844463e5527ccfe06613fa932ced424

Aliases

arxiv: 1901.08433 · arxiv_version: 1901.08433v1 · doi: 10.48550/arxiv.1901.08433 · pith_short_12: TGD2Z5T64Y7T · pith_short_16: TGD2Z5T64Y7TMP2B · pith_short_8: TGD2Z5T6

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/TGD2Z5T64Y7TMP2B6NLZTGCUJF \
  | 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: 9987acf67ee63f363f41f357999854494844463e5527ccfe06613fa932ced424

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e1377cd310b9fef5c99dbf157d32826824235c4f38aa5302556cccabdbe4f36",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-01-24T14:40:33Z",
    "title_canon_sha256": "46fb0306e056cfcfd6f7d0aa8aa8a192b5d9a4fe4e26142aaf00f4cecdc43b2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08433",
    "kind": "arxiv",
    "version": 1
  }
}