Pith Number

pith:SYJ2HOQZ

pith:2019:SYJ2HOQZZ5YU52T2UJWKQ7ZPWQ

not attested not anchored not stored refs pending

Learning to Weight for Text Classification

Alejandro Moreo Fern\'andez, Andrea Esuli, Fabrizio Sebastiani

arxiv:1903.12090 v1 · 2019-03-28 · cs.LG · cs.IR · 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{SYJ2HOQZZ5YU52T2UJWKQ7ZPWQ}

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	2026-07-05T03:15:49.752723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9613a3ba19cf714eea7aa26ca87f2fb43a47d8f472a37f49f4c80bdb1883247f

Aliases

arxiv: 1903.12090 · arxiv_version: 1903.12090v1 · doi: 10.48550/arxiv.1903.12090 · pith_short_12: SYJ2HOQZZ5YU · pith_short_16: SYJ2HOQZZ5YU52T2 · pith_short_8: SYJ2HOQZ

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/SYJ2HOQZZ5YU52T2UJWKQ7ZPWQ \
  | 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: 9613a3ba19cf714eea7aa26ca87f2fb43a47d8f472a37f49f4c80bdb1883247f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e6be537106275400458430208ea1b97cb82c92c119736ab36fe0eb5f374fd57",
    "cross_cats_sorted": [
      "cs.IR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-03-28T16:13:35Z",
    "title_canon_sha256": "1f0432069bc428e7fc8378b8bb01274e96da8b976007fec408b88aba935ec365"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.12090",
    "kind": "arxiv",
    "version": 1
  }
}