Pith Number

pith:PQ6AH4IH

pith:2014:PQ6AH4IHYYVC3UTYFGHXZ4Y7H2

not attested not anchored not stored refs pending

Sparse Estimation with Strongly Correlated Variables using Ordered Weighted L1 Regularization

Mario A. T. Figueiredo, Robert D. Nowak

arxiv:1409.4005 v1 · 2014-09-14 · 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{PQ6AH4IHYYVC3UTYFGHXZ4Y7H2}

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	2026-05-18T02:42:53.257440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c3c03f107c62a2dd278298f7cf31f3ebcf9088eafb153a0268a566d11352c6b

Aliases

arxiv: 1409.4005 · arxiv_version: 1409.4005v1 · doi: 10.48550/arxiv.1409.4005 · pith_short_12: PQ6AH4IHYYVC · pith_short_16: PQ6AH4IHYYVC3UTY · pith_short_8: PQ6AH4IH

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/PQ6AH4IHYYVC3UTYFGHXZ4Y7H2 \
  | 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: 7c3c03f107c62a2dd278298f7cf31f3ebcf9088eafb153a0268a566d11352c6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdcfb219ae08e8cabe259997efe7a3cb4466c9baef3e1b90b5f756410732ad66",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-09-14T02:33:16Z",
    "title_canon_sha256": "40c38a7a7e5178561d35288ff227dea9418147c2fcc2b841b2afa0d08283b26d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.4005",
    "kind": "arxiv",
    "version": 1
  }
}