Pith Number

pith:S73DJNAI

pith:2021:S73DJNAIUYH3YIABQIJFCPPD5K

not attested not anchored not stored refs pending

Investigating Non-local Features for Neural Constituency Parsing

Leyang Cui, Sen Yang, Yue Zhang

arxiv:2109.12814 v2 · 2021-09-27 · 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{S73DJNAIUYH3YIABQIJFCPPD5K}

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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	2026-07-05T04:08:58.845080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97f634b408a60fbc20018212513de3ea83755fc57851a57cc1ffb0bff92a2690

Aliases

arxiv: 2109.12814 · arxiv_version: 2109.12814v2 · doi: 10.48550/arxiv.2109.12814 · pith_short_12: S73DJNAIUYH3 · pith_short_16: S73DJNAIUYH3YIAB · pith_short_8: S73DJNAI

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/S73DJNAIUYH3YIABQIJFCPPD5K \
  | 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: 97f634b408a60fbc20018212513de3ea83755fc57851a57cc1ffb0bff92a2690

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df74b6190ef070258982688ba997b773adbcb34d04f0cf8715a33d4aa088deba",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-09-27T06:14:30Z",
    "title_canon_sha256": "312910b07c0d54c193ba8765fa6064b3faedb1b33034a74a655cdb5023bab45c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12814",
    "kind": "arxiv",
    "version": 2
  }
}