Pith Number

pith:PBJFGM7A

pith:2013:PBJFGM7AVUJYX2QIF2RTCSZXCA

not attested not anchored not stored refs pending

Unsupervised Pretraining Encourages Moderate-Sparseness

Jian Yang, Jun Li, Wei Luo, Xiaotong Yuan

arxiv:1312.5813 v2 · 2013-12-20 · cs.LG · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PBJFGM7AVUJYX2QIF2RTCSZXCA}

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	2026-05-18T02:50:13.079107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78525333e0ad138bea082ea3314b37102ccf028d79486bcdeb6c6fdc99433e9b

Aliases

arxiv: 1312.5813 · arxiv_version: 1312.5813v2 · doi: 10.48550/arxiv.1312.5813 · pith_short_12: PBJFGM7AVUJY · pith_short_16: PBJFGM7AVUJYX2QI · pith_short_8: PBJFGM7A

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/PBJFGM7AVUJYX2QIF2RTCSZXCA \
  | 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: 78525333e0ad138bea082ea3314b37102ccf028d79486bcdeb6c6fdc99433e9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8999407dffa2e7d4028fa2c7e58acc95e2a9c3af27087f10495efd0a5882c3f6",
    "cross_cats_sorted": [
      "cs.NE"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2013-12-20T05:22:20Z",
    "title_canon_sha256": "9dabbb44f150129be70aa9a069163ef4ab849b1965b527c15ccd9aac63cfe9a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5813",
    "kind": "arxiv",
    "version": 2
  }
}