Pith Number

pith:WY7TBCZ7

pith:2021:WY7TBCZ777LGHWRAJXWKBEFL44

not attested not anchored not stored refs pending

Sparse Coding with Multi-Layer Decoders using Variance Regularization

Katrina Evtimova, Yann LeCun

arxiv:2112.09214 v2 · 2021-12-16 · cs.CV · 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{WY7TBCZ777LGHWRAJXWKBEFL44}

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	2026-07-05T04:55:37.379966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b63f308b3fffd663da204deca090abe728ac9e34ddd49df1efc72eaed21d1262

Aliases

arxiv: 2112.09214 · arxiv_version: 2112.09214v2 · doi: 10.48550/arxiv.2112.09214 · pith_short_12: WY7TBCZ777LG · pith_short_16: WY7TBCZ777LGHWRA · pith_short_8: WY7TBCZ7

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/WY7TBCZ777LGHWRAJXWKBEFL44 \
  | 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: b63f308b3fffd663da204deca090abe728ac9e34ddd49df1efc72eaed21d1262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "476ec52df97b9890be15892caf9a8e7448f5ee7c760e93c2211f8431ea892237",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-12-16T21:46:23Z",
    "title_canon_sha256": "2d53eeb09e51d26761cd2a88faeb1367929d96658d5a253dfe35aa3301007d1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.09214",
    "kind": "arxiv",
    "version": 2
  }
}