Pith Number

pith:WNQSW7H3

pith:2021:WNQSW7H3SVKT525UNUI4PSOHZK

not attested not anchored not stored refs pending

Named Entity Recognition and Classification on Historical Documents: A Survey

Ahmed Hamdi, Antoine Doucet, Elvys Linhares Pontes, Matteo Romanello, Maud Ehrmann

arxiv:2109.11406 v1 · 2021-09-23 · 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{WNQSW7H3SVKT525UNUI4PSOHZK}

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.

Cited by

1 paper in Pith

Named Entity Recognition in Historical Italian: The Case of Giacomo Leopardi's Zibaldone

Receipt and verification

First computed	2026-07-05T08:02:40.591289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3612b7cfb95553eebb46d11c7c9c7ca9dae9c9c42bdee114e934ef264d8a0ba

Aliases

arxiv: 2109.11406 · arxiv_version: 2109.11406v1 · doi: 10.48550/arxiv.2109.11406 · pith_short_12: WNQSW7H3SVKT · pith_short_16: WNQSW7H3SVKT525U · pith_short_8: WNQSW7H3

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/WNQSW7H3SVKT525UNUI4PSOHZK \
  | 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: b3612b7cfb95553eebb46d11c7c9c7ca9dae9c9c42bdee114e934ef264d8a0ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23cf918d626f51b1fb944a3c9941b1dd2b27fb1d5fe8a27d561b9d13a73688b0",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-09-23T14:37:40Z",
    "title_canon_sha256": "f8e171a8e3d77a4dd3544c8424f061a94f57ea0816b7510bef1d230597bfd2f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.11406",
    "kind": "arxiv",
    "version": 1
  }
}