Pith Number

pith:4Z7VCCP2

pith:2019:4Z7VCCP2VLOO57JJVMDUYG4DIQ

not attested not anchored not stored refs pending

Automatic dimensionality selection for principal component analysis models with the ignorance score

Guangyu Li, Kris Villez, Stefania Russo

arxiv:1902.03293 v1 · 2019-02-08 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4Z7VCCP2VLOO57JJVMDUYG4DIQ}

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	2026-05-17T23:54:21.334151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e67f5109faaadceefd29ab074c1b83443a4dfb38d7473e0610c8065e80b6e628

Aliases

arxiv: 1902.03293 · arxiv_version: 1902.03293v1 · doi: 10.48550/arxiv.1902.03293 · pith_short_12: 4Z7VCCP2VLOO · pith_short_16: 4Z7VCCP2VLOO57JJ · pith_short_8: 4Z7VCCP2

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/4Z7VCCP2VLOO57JJVMDUYG4DIQ \
  | 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: e67f5109faaadceefd29ab074c1b83443a4dfb38d7473e0610c8065e80b6e628

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b3b7141a550fc9c59b4a95c6039a0116d76f904a3f4eb5b8cd1c57d58431c84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2019-02-08T21:17:02Z",
    "title_canon_sha256": "e358b5e5fbd0addf3310bcdf5d40a253a51380c3265c94812f9c2086e264c6ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03293",
    "kind": "arxiv",
    "version": 1
  }
}