Pith Number

pith:SM4ORUDE

pith:2023:SM4ORUDE7EBO7AXIZYM4X5MZT6

not attested not anchored not stored refs pending

Gzip versus bag-of-words for text classification

Juri Opitz

arxiv:2307.15002 v5 · 2023-07-27 · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SM4ORUDE7EBO7AXIZYM4X5MZT6}

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	2026-07-05T06:39:05.852771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9338e8d064f902ef82e8ce19cbf5999f916ac66101c69da564710d7832d28b33

Aliases

arxiv: 2307.15002 · arxiv_version: 2307.15002v5 · doi: 10.48550/arxiv.2307.15002 · pith_short_12: SM4ORUDE7EBO · pith_short_16: SM4ORUDE7EBO7AXI · pith_short_8: SM4ORUDE

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/SM4ORUDE7EBO7AXIZYM4X5MZT6 \
  | 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: 9338e8d064f902ef82e8ce19cbf5999f916ac66101c69da564710d7832d28b33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89266f8fee5b1c320185de5432e51a2ae8f86f5597f643064a3022f93cea93c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2023-07-27T16:57:32Z",
    "title_canon_sha256": "6b92fe454956edf0b76af701152e555d7b232d6571e34a25dae71f1ee0854078"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.15002",
    "kind": "arxiv",
    "version": 5
  }
}