Pith Number

pith:IF4MN7OU

pith:2014:IF4MN7OUBJKOPW3XG5NPDJ5OXS

not attested not anchored not stored refs pending

Automatic large-scale classification of bird sounds is strongly improved by unsupervised feature learning

Dan Stowell, Mark D. Plumbley

arxiv:1405.6524 v1 · 2014-05-26 · cs.SD · 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{IF4MN7OUBJKOPW3XG5NPDJ5OXS}

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	2026-05-18T02:47:52.514511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4178c6fdd40a54e7db77375af1a7aebc8169e940467772d03f304fd6e157ccb3

Aliases

arxiv: 1405.6524 · arxiv_version: 1405.6524v1 · doi: 10.48550/arxiv.1405.6524 · pith_short_12: IF4MN7OUBJKO · pith_short_16: IF4MN7OUBJKOPW3X · pith_short_8: IF4MN7OU

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/IF4MN7OUBJKOPW3XG5NPDJ5OXS \
  | 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: 4178c6fdd40a54e7db77375af1a7aebc8169e940467772d03f304fd6e157ccb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b41aed816df68159fb7859d6154a46771235e5952ab8ca70a1149f7c27817ac3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2014-05-26T09:58:20Z",
    "title_canon_sha256": "fce461f048fad3f5ba4bcb0274f07b7a2f7b33e4090e792de01e199a543fdc08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6524",
    "kind": "arxiv",
    "version": 1
  }
}