Pith Number

pith:KODCUJW4

pith:2011:KODCUJW4MRB4X4C2Z4XS3H7F74

not attested not anchored not stored refs pending

A Direct Estimation Approach to Sparse Linear Discriminant Analysis

Tony Cai, Weidong Liu

arxiv:1107.3442 v1 · 2011-07-18 · stat.ME · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KODCUJW4MRB4X4C2Z4XS3H7F74}

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	2026-05-18T04:18:03.113898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53862a26dc6443cbf05acf2f2d9fe5ff162219d2d9e197984fa3201e118e3e52

Aliases

arxiv: 1107.3442 · arxiv_version: 1107.3442v1 · doi: 10.48550/arxiv.1107.3442 · pith_short_12: KODCUJW4MRB4 · pith_short_16: KODCUJW4MRB4X4C2 · pith_short_8: KODCUJW4

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/KODCUJW4MRB4X4C2Z4XS3H7F74 \
  | 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: 53862a26dc6443cbf05acf2f2d9fe5ff162219d2d9e197984fa3201e118e3e52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d16564e03e55a970f10cd8f10f4fe7521287a0e1b92feb834d9de0092b1968d6",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2011-07-18T14:09:54Z",
    "title_canon_sha256": "016cde13950096318eee0968fa794e20c069b6a708cd1d96c1b317619790cf22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3442",
    "kind": "arxiv",
    "version": 1
  }
}