Pith Number

pith:L6YF5QKH

pith:2012:L6YF5QKHPQJQP2BLRHZ4NOGSNW

not attested not anchored not stored refs pending

Information-theoretic Dictionary Learning for Image Classification

Qiang Qiu, Rama Chellappa, Vishal M. Patel

arxiv:1208.3687 v1 · 2012-08-17 · cs.CV · cs.IT · math.IT · 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{L6YF5QKHPQJQP2BLRHZ4NOGSNW}

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	2026-05-18T02:21:01.014953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fb05ec1477c1307e82b89f3c6b8d26d8670df0d6a43399fbe29d64c5de16806

Aliases

arxiv: 1208.3687 · arxiv_version: 1208.3687v1 · doi: 10.48550/arxiv.1208.3687 · pith_short_12: L6YF5QKHPQJQ · pith_short_16: L6YF5QKHPQJQP2BL · pith_short_8: L6YF5QKH

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/L6YF5QKHPQJQP2BLRHZ4NOGSNW \
  | 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: 5fb05ec1477c1307e82b89f3c6b8d26d8670df0d6a43399fbe29d64c5de16806

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6f34dd11edc5b37d35b4fe0355d8149436f0fe6c21ecfb84b958c9335056fbd",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-08-17T20:38:56Z",
    "title_canon_sha256": "be2f5a3fa1bce4ee80a6df0a00d507a8a887752a896564fda7ac3321dcdd2766"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3687",
    "kind": "arxiv",
    "version": 1
  }
}