Pith Number

pith:HYD4BKB2

pith:2015:HYD4BKB2NNDND2HT2BMOLHHMX4

not attested not anchored not stored refs pending

Active Function Cross-Entropy Clustering

J. Tabor, P. Markowicz, P. Spurek

arxiv:1502.01943 v1 · 2015-02-06 · 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{HYD4BKB2NNDND2HT2BMOLHHMX4}

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	2026-05-18T02:27:50.394837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e07c0a83a6b46d1e8f3d058e59cecbf1304df30b36ad903f86680f070526cb6

Aliases

arxiv: 1502.01943 · arxiv_version: 1502.01943v1 · doi: 10.48550/arxiv.1502.01943 · pith_short_12: HYD4BKB2NNDN · pith_short_16: HYD4BKB2NNDND2HT · pith_short_8: HYD4BKB2

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/HYD4BKB2NNDND2HT2BMOLHHMX4 \
  | 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: 3e07c0a83a6b46d1e8f3d058e59cecbf1304df30b36ad903f86680f070526cb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e112bd75824b2031dea48236412970b71d9e7305a846ce3e4ca0ad1df30f3def",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-02-06T16:40:06Z",
    "title_canon_sha256": "042ee7ed13a714f39e49e000edb29c07e30a8ead4fcaa011332bef2d8faf03dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01943",
    "kind": "arxiv",
    "version": 1
  }
}