Pith Number

pith:IXIWXPL7

pith:2015:IXIWXPL733J5JGJUJSWDWQ52K7

not attested not anchored not stored refs pending

Supervised Dictionary Learning and Sparse Representation-A Review

Ahmed K. Farahat, Ali Ghodsi, Mehrdad J. Gangeh, Mohamed S. Kamel

arxiv:1502.05928 v1 · 2015-02-20 · 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{IXIWXPL733J5JGJUJSWDWQ52K7}

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	2026-05-18T02:26:44.484592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45d16bbd7fded3d499344cac3b43ba57f1def60c2fdf9227a429b00f24baf0ff

Aliases

arxiv: 1502.05928 · arxiv_version: 1502.05928v1 · doi: 10.48550/arxiv.1502.05928 · pith_short_12: IXIWXPL733J5 · pith_short_16: IXIWXPL733J5JGJU · pith_short_8: IXIWXPL7

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/IXIWXPL733J5JGJUJSWDWQ52K7 \
  | 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: 45d16bbd7fded3d499344cac3b43ba57f1def60c2fdf9227a429b00f24baf0ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "965b6dc5e4035fd1b6968fd933a54c6403b97b6f83637d0750eb94220e9508b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-02-20T16:51:19Z",
    "title_canon_sha256": "e2dcbfc4c14faa3a407dccda630dd065cca427cf4a279d80204f6ad53ec8ea59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05928",
    "kind": "arxiv",
    "version": 1
  }
}