Pith Number

pith:ELDOQTBQ

pith:2015:ELDOQTBQCGBWV4VPLH4LXDJ4Q5

not attested not anchored not stored refs pending

A Randomized Rounding Algorithm for Sparse PCA

Abhisek Kundu, Eugenia-Maria Kontopoulou, Kimon Fountoulakis, Petros Drineas

arxiv:1508.03337 v5 · 2015-08-13 · cs.DS · 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{ELDOQTBQCGBWV4VPLH4LXDJ4Q5}

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	2026-05-18T00:57:04.888312Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22c6e84c3011836af2af59f8bb8d3c875220797d1aca3cfa4e7ffae7aa62f2d2

Aliases

arxiv: 1508.03337 · arxiv_version: 1508.03337v5 · doi: 10.48550/arxiv.1508.03337 · pith_short_12: ELDOQTBQCGBW · pith_short_16: ELDOQTBQCGBWV4VP · pith_short_8: ELDOQTBQ

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/ELDOQTBQCGBWV4VPLH4LXDJ4Q5 \
  | 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: 22c6e84c3011836af2af59f8bb8d3c875220797d1aca3cfa4e7ffae7aa62f2d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fecbd9dccb36c538aacf848aad3ff257abbe0e37f5820045960f61cb4862150",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-08-13T20:06:59Z",
    "title_canon_sha256": "72f3e2a972fba1d964b20cb134782ec248b61800fbb2387c042a91979a726b3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03337",
    "kind": "arxiv",
    "version": 5
  }
}