Pith Number

pith:SM6MACWN

pith:2012:SM6MACWNE46DD24VPDASKVJPSQ

not attested not anchored not stored refs pending

Online Discriminative Dictionary Learning for Image Classification Based on Block-Coordinate Descent Method

Donghui Wang, Shu Kong

arxiv:1203.0856 v1 · 2012-03-05 · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SM6MACWNE46DD24VPDASKVJPSQ}

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	2026-05-18T04:00:50.340443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

933cc00acd273c31eb9578c125552f9412d824b25aebf2915a2066eb1586fd2f

Aliases

arxiv: 1203.0856 · arxiv_version: 1203.0856v1 · doi: 10.48550/arxiv.1203.0856 · pith_short_12: SM6MACWNE46D · pith_short_16: SM6MACWNE46DD24V · pith_short_8: SM6MACWN

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/SM6MACWNE46DD24VPDASKVJPSQ \
  | 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: 933cc00acd273c31eb9578c125552f9412d824b25aebf2915a2066eb1586fd2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c72f87eb04e70da0243aa0c9003a73aa07c67e1c12faabaaa8bd6ab6d15dff9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-03-05T10:43:15Z",
    "title_canon_sha256": "baaa14ae6028939eff7d5562039b0b3f13865cf834f7a4b2ff605c3648826e43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0856",
    "kind": "arxiv",
    "version": 1
  }
}