Pith Number

pith:UO3OGIIA

pith:2024:UO3OGIIAIP6KYLVUYLGR5WXJWW

not attested not anchored not stored refs pending

Bi-Sparse Unsupervised Feature Selection

Chenyi Huang, Pan Shang, Wanquan Liu, Xianchao Xiu

arxiv:2412.16819 v2 · 2024-12-22 · 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{UO3OGIIAIP6KYLVUYLGR5WXJWW}

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	2026-07-05T11:53:43.312160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3b6e3210043fcac2eb4c2cd1edae9b582cbef61a4160d7ea10a867181d77e4e

Aliases

arxiv: 2412.16819 · arxiv_version: 2412.16819v2 · doi: 10.48550/arxiv.2412.16819 · pith_short_12: UO3OGIIAIP6K · pith_short_16: UO3OGIIAIP6KYLVU · pith_short_8: UO3OGIIA

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/UO3OGIIAIP6KYLVUYLGR5WXJWW \
  | 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: a3b6e3210043fcac2eb4c2cd1edae9b582cbef61a4160d7ea10a867181d77e4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffa0aa8b0dd89d6baa786d4d0fd14e5632b9e8f7d8fe867a6298a1a2442a497f",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2024-12-22T01:43:58Z",
    "title_canon_sha256": "7bf0a566ae31bf7dfe4d319ac65b4a1acd09600ff8df8a05900778fe134ac660"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2412.16819",
    "kind": "arxiv",
    "version": 2
  }
}