Pith Number

pith:5FJXQFJS

pith:2018:5FJXQFJS4F5343I264Y7CH2X7M

not attested not anchored not stored refs pending

Tree-structured multi-stage principal component analysis (TMPCA): theory and applications

C.-C. Jay Kuo, Ruiyuan Lin, Yuanhang Su

arxiv:1807.08228 v2 · 2018-07-22 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5FJXQFJS4F5343I264Y7CH2X7M}

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	2026-05-18T00:03:36.678779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e953781532e17bbe6d1af731f11f57fb33d970ff708108d5e8c08d3d83f1e17f

Aliases

arxiv: 1807.08228 · arxiv_version: 1807.08228v2 · doi: 10.48550/arxiv.1807.08228 · pith_short_12: 5FJXQFJS4F53 · pith_short_16: 5FJXQFJS4F5343I2 · pith_short_8: 5FJXQFJS

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/5FJXQFJS4F5343I264Y7CH2X7M \
  | 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: e953781532e17bbe6d1af731f11f57fb33d970ff708108d5e8c08d3d83f1e17f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d264ce81197d06f298f759b86d19646036ac3397a01e0f48a688d0d45399b61",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-07-22T03:15:44Z",
    "title_canon_sha256": "54fadf37b9f460c22d817cd5bb1a52542e5dd0dc40386a752e62b1af90cca572"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08228",
    "kind": "arxiv",
    "version": 2
  }
}