Pith Number

pith:TXQNEOUG

pith:2014:TXQNEOUGUTX3TLY5Z3VR6AGEYK

not attested not anchored not stored refs pending

A Convex Sparse PCA for Feature Analysis

Feiping Nie, Heng Huang, Xiaojun Chang, Yi Yang

arxiv:1411.6233 v1 · 2014-11-23 · 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{TXQNEOUGUTX3TLY5Z3VR6AGEYK}

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	2026-05-18T00:40:41.984824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9de0d23a86a4efb9af1dceeb1f00c4c2bfdb32f2a96e5cf469add2379b0f6349

Aliases

arxiv: 1411.6233 · arxiv_version: 1411.6233v1 · doi: 10.48550/arxiv.1411.6233 · pith_short_12: TXQNEOUGUTX3 · pith_short_16: TXQNEOUGUTX3TLY5 · pith_short_8: TXQNEOUG

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/TXQNEOUGUTX3TLY5Z3VR6AGEYK \
  | 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: 9de0d23a86a4efb9af1dceeb1f00c4c2bfdb32f2a96e5cf469add2379b0f6349

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fb826fa169e0953c2a5f0a46eff7d1ba9fe3a391d272ab7a5e828053d69c915",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-11-23T13:06:43Z",
    "title_canon_sha256": "1c14ab04a38a18960fe71268552a7e5a0b67b34f4a38f185b9f97fad05ece8e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.6233",
    "kind": "arxiv",
    "version": 1
  }
}