Pith Number

pith:2ELNZ44D

pith:2019:2ELNZ44DKVL4US5Q7HHGHXAUXB

not attested not anchored not stored refs pending

Online Adaptive Principal Component Analysis and Its extensions

Andrew Lamperski, Jianjun Yuan

arxiv:1901.07687 v3 · 2019-01-23 · cs.LG · 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{2ELNZ44DKVL4US5Q7HHGHXAUXB}

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	2026-05-17T23:46:29.118148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d116dcf3835557ca4bb0f9ce63dc14b856d923dcd62d6456fa53c72b4e873b86

Aliases

arxiv: 1901.07687 · arxiv_version: 1901.07687v3 · doi: 10.48550/arxiv.1901.07687 · pith_short_12: 2ELNZ44DKVL4 · pith_short_16: 2ELNZ44DKVL4US5Q · pith_short_8: 2ELNZ44D

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/2ELNZ44DKVL4US5Q7HHGHXAUXB \
  | 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: d116dcf3835557ca4bb0f9ce63dc14b856d923dcd62d6456fa53c72b4e873b86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bb4b4c2805726a4defe44ebbf38b94db62bbae6fccf07f9601ac4cfbe878b12",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-01-23T02:06:51Z",
    "title_canon_sha256": "18187b2321f3d5d91034392e5c8a004f727ca4d04e958e6f4a8fb0bc811e6ae4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07687",
    "kind": "arxiv",
    "version": 3
  }
}