Pith Number

pith:HNJROCLF

pith:2015:HNJROCLFBGGPYP7UXLW4TQP6DH

not attested not anchored not stored refs pending

Regularized Principal Component Analysis for Spatial Data

Hsin-Cheng Huang, Wen-Ting Wang

arxiv:1501.03221 v3 · 2015-01-14 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HNJROCLFBGGPYP7UXLW4TQP6DH}

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	2026-05-18T01:19:57.547160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b53170965098cfc3ff4baedc9c1fe19f0dd859938661e83f0c4453b102969de

Aliases

arxiv: 1501.03221 · arxiv_version: 1501.03221v3 · doi: 10.48550/arxiv.1501.03221 · pith_short_12: HNJROCLFBGGP · pith_short_16: HNJROCLFBGGPYP7U · pith_short_8: HNJROCLF

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/HNJROCLFBGGPYP7UXLW4TQP6DH \
  | 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: 3b53170965098cfc3ff4baedc9c1fe19f0dd859938661e83f0c4453b102969de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60eccfb2edf19b4b67a491600c2623a6df0699e21113fa5c437b688942a6188c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2015-01-14T00:41:13Z",
    "title_canon_sha256": "6561784ae8c95f196be7fd1c552234d017676cba727aa787e308b301f19519b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.03221",
    "kind": "arxiv",
    "version": 3
  }
}