Pith Number

pith:OL2YWN4A

pith:2012:OL2YWN4AD4PD4C7FONBX3PO2XV

not attested not anchored not stored refs pending

A Brief Summary of Dictionary Learning Based Approach for Classification (revised)

Donghui Wang, Shu Kong

arxiv:1205.6544 v1 · 2012-05-30 · cs.CV · 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{OL2YWN4AD4PD4C7FONBX3PO2XV}

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	2026-05-18T03:54:38.598836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72f58b37801f1e3e0be573437dbddabd7d11cdd067ce376b55201c3bee96b80b

Aliases

arxiv: 1205.6544 · arxiv_version: 1205.6544v1 · doi: 10.48550/arxiv.1205.6544 · pith_short_12: OL2YWN4AD4PD · pith_short_16: OL2YWN4AD4PD4C7F · pith_short_8: OL2YWN4A

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/OL2YWN4AD4PD4C7FONBX3PO2XV \
  | 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: 72f58b37801f1e3e0be573437dbddabd7d11cdd067ce376b55201c3bee96b80b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7c78f719406db441e143f36b90265c2dd72f233117b5362c5658899b23ac7e3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-05-30T05:07:55Z",
    "title_canon_sha256": "f57c8a59d5a25b43a9250986ca8ef565678b402b0642e3bbb2800350b1e6a658"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6544",
    "kind": "arxiv",
    "version": 1
  }
}