Pith Number

pith:WXKWXMOJ

pith:2020:WXKWXMOJS57THJL7FWWK3TZ5PA

not attested not anchored not stored refs pending

Pre-training is a Hot Topic: Contextualized Document Embeddings Improve Topic Coherence

Dirk Hovy, Federico Bianchi, Silvia Terragni

arxiv:2004.03974 v2 · 2020-04-08 · 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{WXKWXMOJS57THJL7FWWK3TZ5PA}

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	2026-07-05T02:50:05.414639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5d56bb1c9977f33a57f2dacadcf3d780f6c875a4801c2e5717ce80b31e9375d

Aliases

arxiv: 2004.03974 · arxiv_version: 2004.03974v2 · doi: 10.48550/arxiv.2004.03974 · pith_short_12: WXKWXMOJS57T · pith_short_16: WXKWXMOJS57THJL7 · pith_short_8: WXKWXMOJ

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/WXKWXMOJS57THJL7FWWK3TZ5PA \
  | 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: b5d56bb1c9977f33a57f2dacadcf3d780f6c875a4801c2e5717ce80b31e9375d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d5ced0253d321604fc5d25dafc294583f9b5d4a6088f2d25264786bdd0103f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2020-04-08T12:37:51Z",
    "title_canon_sha256": "585e8a4daad26ea976a2faadd8a0c1b9400bb3f995fe9e4b19e059f76db33daa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03974",
    "kind": "arxiv",
    "version": 2
  }
}