Pith Number

pith:OKFL7WJE

pith:2025:OKFL7WJEGMHGMNCNKZLWJAP366

not attested not anchored not stored refs pending

Enhancing Keyphrase Extraction from Academic Articles Using Section Structure Information

Chengzhi Zhang, Lei Zhao, Xinyi Yan, Yingyi Zhang

arxiv:2505.14149 v1 · 2025-05-20 · cs.CL · cs.DL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OKFL7WJEGMHGMNCNKZLWJAP366}

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	2026-07-05T11:05:56.849153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

728abfd924330e66344d56576481fbf7a64063d88c4763cdda4bb3c8d1f946d1

Aliases

arxiv: 2505.14149 · arxiv_version: 2505.14149v1 · doi: 10.48550/arxiv.2505.14149 · pith_short_12: OKFL7WJEGMHG · pith_short_16: OKFL7WJEGMHGMNCN · pith_short_8: OKFL7WJE

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/OKFL7WJEGMHGMNCNKZLWJAP366 \
  | 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: 728abfd924330e66344d56576481fbf7a64063d88c4763cdda4bb3c8d1f946d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "986014e443ccd538510880877c502cdf4591f7bf5f108370dd95b9126b0996d6",
    "cross_cats_sorted": [
      "cs.DL",
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-05-20T09:57:34Z",
    "title_canon_sha256": "c3cd2220f1ab3eee5336a32a16c7b624b1cc14b3420cf774f7633b6c8b978177"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.14149",
    "kind": "arxiv",
    "version": 1
  }
}