Pith Number

pith:NKNOK2BM

pith:2018:NKNOK2BMZWLKSNTHFGV7G5OUSY

not attested not anchored not stored refs pending

A Note on Coding and Standardization of Categorical Variables in (Sparse) Group Lasso Regression

Felicitas J. Detmer, Martin Slawski

arxiv:1805.06915 v1 · 2018-05-17 · stat.CO · stat.ME · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NKNOK2BMZWLKSNTHFGV7G5OUSY}

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	2026-05-18T00:15:42.742189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a9ae5682ccd96a9366729abf375d4960633c8aadd9eac5163e720794f21e0ee

Aliases

arxiv: 1805.06915 · arxiv_version: 1805.06915v1 · doi: 10.48550/arxiv.1805.06915 · pith_short_12: NKNOK2BMZWLK · pith_short_16: NKNOK2BMZWLKSNTH · pith_short_8: NKNOK2BM

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/NKNOK2BMZWLKSNTHFGV7G5OUSY \
  | 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: 6a9ae5682ccd96a9366729abf375d4960633c8aadd9eac5163e720794f21e0ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "282f3c89191effafb9ee91b320dd870442a7aafa78bc2b63000a9530695270cc",
    "cross_cats_sorted": [
      "stat.ME",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2018-05-17T18:21:58Z",
    "title_canon_sha256": "6dae28293e5b2b5ba5645de87e4970d42e602b33bd718eb9c751786c322d22ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.06915",
    "kind": "arxiv",
    "version": 1
  }
}