Pith Number

pith:E6O2IFBZ

pith:2018:E6O2IFBZK7AFKXUYTEODCQZSMY

not attested not anchored not stored refs pending

Joint entity recognition and relation extraction as a multi-head selection problem

Chris Develder, Giannis Bekoulis, Johannes Deleu, Thomas Demeester

arxiv:1804.07847 v3 · 2018-04-20 · 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{E6O2IFBZK7AFKXUYTEODCQZSMY}

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	2026-05-17T23:58:14.362685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

279da4143957c0555e98991c314332660e694ff2ee330efd64e932b62a782c41

Aliases

arxiv: 1804.07847 · arxiv_version: 1804.07847v3 · doi: 10.48550/arxiv.1804.07847 · pith_short_12: E6O2IFBZK7AF · pith_short_16: E6O2IFBZK7AFKXUY · pith_short_8: E6O2IFBZ

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/E6O2IFBZK7AFKXUYTEODCQZSMY \
  | 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: 279da4143957c0555e98991c314332660e694ff2ee330efd64e932b62a782c41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e78ad9196db90cff7e711658e0adf584a4f24afe14b68b30dcdf86135867edbf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-04-20T22:16:40Z",
    "title_canon_sha256": "16434a4ed6567151a3d8f98672c39013c5fba1d31be71dc3590e30d0db9becf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07847",
    "kind": "arxiv",
    "version": 3
  }
}