Pith Number

pith:PLHRK4SF

pith:2001:PLHRK4SFDMADBJW2WFRWC3JUZ4

not attested not anchored not stored refs pending

Efficient algorithms for decision tree cross-validation

Hendrik Blockeel, Jan Struyf

arxiv:cs/0110036 v1 · 2001-10-17 · 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{PLHRK4SFDMADBJW2WFRWC3JUZ4}

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	2026-07-04T14:24:12.750337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7acf1572451b0030a6dab163616d34cf21879392716ee3d2f5287af6716e39ac

Aliases

arxiv: cs/0110036 · arxiv_version: cs/0110036v1 · doi: 10.48550/arxiv.cs/0110036 · pith_short_12: PLHRK4SFDMAD · pith_short_16: PLHRK4SFDMADBJW2 · pith_short_8: PLHRK4SF

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/PLHRK4SFDMADBJW2WFRWC3JUZ4 \
  | 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: 7acf1572451b0030a6dab163616d34cf21879392716ee3d2f5287af6716e39ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04eae76bea80fbe5a8fdc0138463c1c10c5c8585b27e654cf6340f6bd22b46ea",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.LG",
    "submitted_at": "2001-10-17T15:45:23Z",
    "title_canon_sha256": "10e51132ead32a22dac8cb3b69e243e900f3872042e5914accd4edd9c5d32966"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0110036",
    "kind": "arxiv",
    "version": 1
  }
}