Pith Number

pith:FFZKDWYN

pith:2018:FFZKDWYNHIAKJBZ3RFEULQUL35

not attested not anchored not stored refs pending

An Ensemble Generation Method Based on Instance Hardness

Dayvid V. R. Oliveira, Felipe N. Walmsley, George D. C. Cavalcanti, Rafael M. O. Cruz, Robert Sabourin

arxiv:1804.07419 v2 · 2018-04-20 · cs.LG · cs.AI · 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{FFZKDWYNHIAKJBZ3RFEULQUL35}

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	2026-05-18T00:01:53.334058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2972a1db0d3a00a4873b894945c28bdf40db33c104803bd578fe473a375e8ced

Aliases

arxiv: 1804.07419 · arxiv_version: 1804.07419v2 · doi: 10.48550/arxiv.1804.07419 · pith_short_12: FFZKDWYNHIAK · pith_short_16: FFZKDWYNHIAKJBZ3 · pith_short_8: FFZKDWYN

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/FFZKDWYNHIAKJBZ3RFEULQUL35 \
  | 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: 2972a1db0d3a00a4873b894945c28bdf40db33c104803bd578fe473a375e8ced

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d408b2e8eaa8332ca5b032afd0e42743d8e925348b577a0b5782edabc967ffbc",
    "cross_cats_sorted": [
      "cs.AI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-04-20T01:29:47Z",
    "title_canon_sha256": "10443c735b30dfd83ab7ee9f5a5ab37d484adaefab79023b2d99522f6638abce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07419",
    "kind": "arxiv",
    "version": 2
  }
}