Pith Number

pith:LTKK7D7Y

pith:2013:LTKK7D7YR2SY2NE2IPJIWYTLJS

not attested not anchored not stored refs pending

Semi-Supervised Sparse Coding

Jim Jing-Yan Wang, Xin Gao

arxiv:1311.6834 v2 · 2013-11-26 · stat.ML · 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{LTKK7D7YR2SY2NE2IPJIWYTLJS}

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	2026-05-18T02:29:17.582667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cd4af8ff88ea58d349a43d28b626b4ca39d1e34009efccb9d92e60360a52321

Aliases

arxiv: 1311.6834 · arxiv_version: 1311.6834v2 · doi: 10.48550/arxiv.1311.6834 · pith_short_12: LTKK7D7YR2SY · pith_short_16: LTKK7D7YR2SY2NE2 · pith_short_8: LTKK7D7Y

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/LTKK7D7YR2SY2NE2IPJIWYTLJS \
  | 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: 5cd4af8ff88ea58d349a43d28b626b4ca39d1e34009efccb9d92e60360a52321

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7754a221639c41ccb70db6c36ec7ee8db4adb2bbd164531cf1c2de273a74f91",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-11-26T22:13:37Z",
    "title_canon_sha256": "eb7454a5e2092eee9d70a5fbb3b1e4046cc0b109b2bc3e7c89e3402bb424b27d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6834",
    "kind": "arxiv",
    "version": 2
  }
}