Pith Number

pith:TWBJZER4

pith:2013:TWBJZER4CZOODHMLAA3VSSPLJH

not attested not anchored not stored refs pending

Unsupervised Learning of Invariant Representations in Hierarchical Architectures

Andrea Tacchetti, Fabio Anselmi, Jim Mutch, Joel Z. Leibo, Lorenzo Rosasco, Tomaso Poggio

arxiv:1311.4158 v5 · 2013-11-17 · 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{TWBJZER4CZOODHMLAA3VSSPLJH}

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	2026-05-18T02:56:43.751972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d829c923c165ce19d8b00375949eb49fa4b744230abdfc197ce83f031732b6b

Aliases

arxiv: 1311.4158 · arxiv_version: 1311.4158v5 · doi: 10.48550/arxiv.1311.4158 · pith_short_12: TWBJZER4CZOO · pith_short_16: TWBJZER4CZOODHML · pith_short_8: TWBJZER4

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/TWBJZER4CZOODHMLAA3VSSPLJH \
  | 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: 9d829c923c165ce19d8b00375949eb49fa4b744230abdfc197ce83f031732b6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3e56d200f53a95eaa12c6f9f4bd38145f3d4b9efa570022e219cbe288f5ce59",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-11-17T13:22:44Z",
    "title_canon_sha256": "8ea07fd7ef863b0fb9cb81d3a006e8c67980289c3388b14f3de23a913e2fdd4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4158",
    "kind": "arxiv",
    "version": 5
  }
}