Pith Number

pith:NGTJYZCA

pith:2014:NGTJYZCANTPD3U7T7YLIGHJZJW

not attested not anchored not stored refs pending

A Brief History of Learning Classifier Systems: From CS-1 to XCS

Larry Bull

arxiv:1401.3607 v2 · 2014-01-15 · cs.NE · 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{NGTJYZCANTPD3U7T7YLIGHJZJW}

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	2026-05-18T02:59:47.326112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69a69c64406cde3dd3f3fe16831d394d94c13f3f5e1a279c083d9b4bd00f1ded

Aliases

arxiv: 1401.3607 · arxiv_version: 1401.3607v2 · doi: 10.48550/arxiv.1401.3607 · pith_short_12: NGTJYZCANTPD · pith_short_16: NGTJYZCANTPD3U7T · pith_short_8: NGTJYZCA

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/NGTJYZCANTPD3U7T7YLIGHJZJW \
  | 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: 69a69c64406cde3dd3f3fe16831d394d94c13f3f5e1a279c083d9b4bd00f1ded

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c2bccf65eb8e271c83571a70f3b64530feff81e421aa31b5422ee4ab327a342",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2014-01-15T14:37:48Z",
    "title_canon_sha256": "d60b18f9e1df620b2410e0c753e56a57e1397adc939449335ad004fd5c0bcc27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3607",
    "kind": "arxiv",
    "version": 2
  }
}