Pith Number

pith:CZX35VY7

pith:2019:CZX35VY7BWUG3BLBZBDIODX35U

not attested not anchored not stored refs pending

Optimal Clustering Framework for Hyperspectral Band Selection

Fahong Zhang, Qi Wang, Xuelong Li

arxiv:1904.13036 v1 · 2019-04-30 · eess.IV · 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{CZX35VY7BWUG3BLBZBDIODX35U}

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	2026-05-17T23:47:24.114654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

166fbed71f0da86d8561c846870efbed050abc6d3d743d67baea24db90330568

Aliases

arxiv: 1904.13036 · arxiv_version: 1904.13036v1 · doi: 10.48550/arxiv.1904.13036 · pith_short_12: CZX35VY7BWUG · pith_short_16: CZX35VY7BWUG3BLB · pith_short_8: CZX35VY7

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/CZX35VY7BWUG3BLBZBDIODX35U \
  | 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: 166fbed71f0da86d8561c846870efbed050abc6d3d743d67baea24db90330568

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f589063a8d3c8c20f2cecfdeed0d8f7dbbc8fbcae4ab97278807025c972b597",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-04-30T03:26:44Z",
    "title_canon_sha256": "978c40ab8e320c66b22ec698091fee830590bc8677c9b1dcc62d529cd5df4c60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.13036",
    "kind": "arxiv",
    "version": 1
  }
}