Pith Number

pith:UP5G4QUI

pith:2013:UP5G4QUIJUD6PRQE6UTPQNKJKD

not attested not anchored not stored refs pending

Semi-supervised clustering methods

Eric Bair

arxiv:1307.0252 v1 · 2013-07-01 · stat.ME · 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{UP5G4QUIJUD6PRQE6UTPQNKJKD}

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	2026-05-18T02:48:01.090726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3fa6e42884d07e7c604f526f8354950d629bd9fa0d96ff97e2e0e0fac6fdc1e

Aliases

arxiv: 1307.0252 · arxiv_version: 1307.0252v1 · doi: 10.48550/arxiv.1307.0252 · pith_short_12: UP5G4QUIJUD6 · pith_short_16: UP5G4QUIJUD6PRQE · pith_short_8: UP5G4QUI

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/UP5G4QUIJUD6PRQE6UTPQNKJKD \
  | 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: a3fa6e42884d07e7c604f526f8354950d629bd9fa0d96ff97e2e0e0fac6fdc1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97ae5399e88a4e13341f1492f8cce18efb2e96922ac9c6b55c4168b7a0834d91",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2013-07-01T00:51:07Z",
    "title_canon_sha256": "602e822bf68f408dda33c3d3dff2ee7f8def4108884de3ca605e497243fe0aa5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.0252",
    "kind": "arxiv",
    "version": 1
  }
}