Pith Number

pith:IQHEQAXP

pith:2012:IQHEQAXPEZRLL73OV7CQS42HF2

not attested not anchored not stored refs pending

Large-Scale Feature Learning With Spike-and-Slab Sparse Coding

Aaron Courville (Universite de Montreal), Ian Goodfellow (Universite de Montreal), Yoshua Bengio (Universite de Montreal)

arxiv:1206.6407 v1 · 2012-06-27 · cs.LG · 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{IQHEQAXPEZRLL73OV7CQS42HF2}

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	2026-05-18T03:52:14.391677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

440e4802ef2662b5ff6eafc50973472e8fa527e1ca3f8fb572f75a49a0a3eff4

Aliases

arxiv: 1206.6407 · arxiv_version: 1206.6407v1 · doi: 10.48550/arxiv.1206.6407 · pith_short_12: IQHEQAXPEZRL · pith_short_16: IQHEQAXPEZRLL73O · pith_short_8: IQHEQAXP

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/IQHEQAXPEZRLL73OV7CQS42HF2 \
  | 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: 440e4802ef2662b5ff6eafc50973472e8fa527e1ca3f8fb572f75a49a0a3eff4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24c15a04180777a85c34da6b0f3cb8d1fd7c9fffdaa85a29c0e2a4c6c150210a",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-06-27T19:59:59Z",
    "title_canon_sha256": "1440820c24236df8d130e7edaaec254a0e1a89002a7da5e94332c2c256421eae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.6407",
    "kind": "arxiv",
    "version": 1
  }
}