Pith Number

pith:UNAPBWDY

pith:2021:UNAPBWDYQ3JL2KE2Q52LLBBAIJ

not attested not anchored not stored refs pending

Quantile Encoder: Tackling High Cardinality Categorical Features in Regression Problems

Carlos Mougan, David Masip, Jordi Nin, Oriol Pujol

arxiv:2105.13783 v2 · 2021-05-27 · 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{UNAPBWDYQ3JL2KE2Q52LLBBAIJ}

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	2026-07-05T02:54:56.214776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a340f0d87886d2bd289a8774b5842042459e816f362b9572a15d813abd6bd5a1

Aliases

arxiv: 2105.13783 · arxiv_version: 2105.13783v2 · doi: 10.48550/arxiv.2105.13783 · pith_short_12: UNAPBWDYQ3JL · pith_short_16: UNAPBWDYQ3JL2KE2 · pith_short_8: UNAPBWDY

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/UNAPBWDYQ3JL2KE2Q52LLBBAIJ \
  | 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: a340f0d87886d2bd289a8774b5842042459e816f362b9572a15d813abd6bd5a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12f48f7b7daaf648bcf5793d29dc53bde572dd028f613fe1459ad144feebe0ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-05-27T11:56:13Z",
    "title_canon_sha256": "9adc48d45452233de7fcdbc86db338959816827dcec8f7536e4a52c848cef6d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.13783",
    "kind": "arxiv",
    "version": 2
  }
}