Pith Number

pith:DHSO4LAD

pith:2021:DHSO4LAD3WZQK6O2HF5AN4VAAA

not attested not anchored not stored refs pending

Neural Text Classification and Stacked Heterogeneous Embeddings for Named Entity Recognition in SMM4H 2021

Stefan Langer, Usama Yaseen

arxiv:2106.05823 v2 · 2021-06-10 · 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{DHSO4LAD3WZQK6O2HF5AN4VAAA}

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	2026-07-05T02:48:24.277568Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19e4ee2c03ddb30579da397a06f2a0001b90acf066ac21cd74c303c3bd1c0ede

Aliases

arxiv: 2106.05823 · arxiv_version: 2106.05823v2 · doi: 10.48550/arxiv.2106.05823 · pith_short_12: DHSO4LAD3WZQ · pith_short_16: DHSO4LAD3WZQK6O2 · pith_short_8: DHSO4LAD

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/DHSO4LAD3WZQK6O2HF5AN4VAAA \
  | 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: 19e4ee2c03ddb30579da397a06f2a0001b90acf066ac21cd74c303c3bd1c0ede

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "226b2d64aefd3ef75d3d2a9ca06b4d1e9560db41103a9d9093d22409ebfab77b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-06-10T15:43:21Z",
    "title_canon_sha256": "c2b50833773ccc0b616e8382898b9e74e1b1cc845e977061286d80ecd6042c3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.05823",
    "kind": "arxiv",
    "version": 2
  }
}