Pith Number

pith:QTPOFAK2

pith:2014:QTPOFAK25U4ILERZDEPAEOEL7D

not attested not anchored not stored refs pending

Fast, simple and accurate handwritten digit classification by training shallow neural network classifiers with the 'extreme learning machine' algorithm

Andr\'e van Schaik, Jonathan Tapson, Mark D. McDonnell, Migel D. Tissera, Tony Vladusich

arxiv:1412.8307 v2 · 2014-12-29 · cs.NE · cs.CV · 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{QTPOFAK25U4ILERZDEPAEOEL7D}

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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	2026-05-18T01:20:47.210870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84dee2815aed38859239191e02388bf8cce6f17f1b19679b8c08a802a2c8caa5

Aliases

arxiv: 1412.8307 · arxiv_version: 1412.8307v2 · doi: 10.48550/arxiv.1412.8307 · pith_short_12: QTPOFAK25U4I · pith_short_16: QTPOFAK25U4ILERZ · pith_short_8: QTPOFAK2

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/QTPOFAK25U4ILERZDEPAEOEL7D \
  | 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: 84dee2815aed38859239191e02388bf8cce6f17f1b19679b8c08a802a2c8caa5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4471f4c055d05eba8e378763e1d04da1c3d70454c1bdbb5596f08599de55785a",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2014-12-29T11:14:59Z",
    "title_canon_sha256": "2f40fd3f562654695d847d68cc69225ffe6bee6c15db231241170039f8ff7253"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.8307",
    "kind": "arxiv",
    "version": 2
  }
}