Pith Number

pith:EGCCLY5S

pith:2025:EGCCLY5SCOKH4N7JALOURPDH4E

not attested not anchored not stored refs pending

A BERT-based Hierarchical Classification Model with Applications in Chinese Commodity Classification

Feifei Wang, Kun Liu, Rui Pan, Tuozhen Liu

arxiv:2508.15800 v1 · 2025-08-13 · cs.CL · 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{EGCCLY5SCOKH4N7JALOURPDH4E}

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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	2026-07-05T11:58:36.341727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

218425e3b213947e37e902dd48bc67e12b1a3668c684173fe401fca73e90a59f

Aliases

arxiv: 2508.15800 · arxiv_version: 2508.15800v1 · doi: 10.48550/arxiv.2508.15800 · pith_short_12: EGCCLY5SCOKH · pith_short_16: EGCCLY5SCOKH4N7J · pith_short_8: EGCCLY5S

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/EGCCLY5SCOKH4N7JALOURPDH4E \
  | 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: 218425e3b213947e37e902dd48bc67e12b1a3668c684173fe401fca73e90a59f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1183c3eea83b78e82301caa1f9b3e676d4df3771a8e377779d5b7464983f497",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-08-13T16:10:47Z",
    "title_canon_sha256": "1c39bcc174c006f6b82f6c68ac2f32737443c7c70b9027df183cbbb7ab505d53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.15800",
    "kind": "arxiv",
    "version": 1
  }
}