Pith Number

pith:AIOIM4CC

pith:2015:AIOIM4CCAC3H3D2P2QUHU67HOJ

not attested not anchored not stored refs pending

Global and Local Structure Preserving Sparse Subspace Learning: An Iterative Approach to Unsupervised Feature Selection

Hong Cheng, Jun Fang, Nan Zhou, Witold Pedrycz, Yangyang Xu

arxiv:1506.01060 v2 · 2015-06-02 · 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{AIOIM4CCAC3H3D2P2QUHU67HOJ}

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	2026-05-18T01:29:54.066753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

021c86704200b67d8f4fd4287a7be77246473cca8dc07f1688ce1f2cb08dd7ef

Aliases

arxiv: 1506.01060 · arxiv_version: 1506.01060v2 · doi: 10.48550/arxiv.1506.01060 · pith_short_12: AIOIM4CCAC3H · pith_short_16: AIOIM4CCAC3H3D2P · pith_short_8: AIOIM4CC

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/AIOIM4CCAC3H3D2P2QUHU67HOJ \
  | 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: 021c86704200b67d8f4fd4287a7be77246473cca8dc07f1688ce1f2cb08dd7ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67e85724c3f7fe386f220a5c5befdd6f269c3bd19b8af88e37f80bdeab1afb9b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-06-02T21:02:16Z",
    "title_canon_sha256": "eb805ba905b24ffc19a6473ce713ea0c39d2e37e529191f1874f70b36ee635f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.01060",
    "kind": "arxiv",
    "version": 2
  }
}