Pith Number

pith:ZV562JTH

pith:2025:ZV562JTHI3V5MEL6UM6OLDVEYG

not attested not anchored not stored refs pending

Enhancing Unsupervised Feature Selection via Double Sparsity Constrained Optimization

Anning Yang, Chenyi Huang, Wanquan Liu, Xianchao Xiu, Xinrong Li

arxiv:2501.00726 v1 · 2025-01-01 · math.OC · 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{ZV562JTHI3V5MEL6UM6OLDVEYG}

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	2026-07-05T09:56:09.454943Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd7bed266746ebd6117ea33ce58ea4c1aa8519ff9b958e7e878aa719c8863e31

Aliases

arxiv: 2501.00726 · arxiv_version: 2501.00726v1 · doi: 10.48550/arxiv.2501.00726 · pith_short_12: ZV562JTHI3V5 · pith_short_16: ZV562JTHI3V5MEL6 · pith_short_8: ZV562JTH

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/ZV562JTHI3V5MEL6UM6OLDVEYG \
  | 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: cd7bed266746ebd6117ea33ce58ea4c1aa8519ff9b958e7e878aa719c8863e31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ee37ceb21bcaddeb4af87d3bd29573f6a9888c3a7c35786690f642deea65ee0",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-01-01T05:05:46Z",
    "title_canon_sha256": "efbb0c88a4bcd9923b88325ab1e101bce5af69737efc21f95d9a9d3d7d54e765"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.00726",
    "kind": "arxiv",
    "version": 1
  }
}