Pith Number

pith:EHZL4ZYH

pith:2018:EHZL4ZYH5YS2SHEQ7UGD4OFVQB

not attested not anchored not stored refs pending

Unsupervised Machine Commenting with Neural Variational Topic Model

Furu Wei, Lei Cui, Shuming Ma, Xu Sun

arxiv:1809.04960 v1 · 2018-09-13 · 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{EHZL4ZYH5YS2SHEQ7UGD4OFVQB}

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	2026-05-18T00:05:47.010962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21f2be6707ee25a91c90fd0c3e38b5807be012a749e29957ac6351357ebbdaf2

Aliases

arxiv: 1809.04960 · arxiv_version: 1809.04960v1 · doi: 10.48550/arxiv.1809.04960 · pith_short_12: EHZL4ZYH5YS2 · pith_short_16: EHZL4ZYH5YS2SHEQ · pith_short_8: EHZL4ZYH

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/EHZL4ZYH5YS2SHEQ7UGD4OFVQB \
  | 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: 21f2be6707ee25a91c90fd0c3e38b5807be012a749e29957ac6351357ebbdaf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c93f6929ba85507e583a5246ada607ea994e0c803e792362b66f23baed39e8c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-09-13T13:48:42Z",
    "title_canon_sha256": "064cacf4d404689efbe86f6111488b9b9484c33cb351c33adcecb0d519ca181f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04960",
    "kind": "arxiv",
    "version": 1
  }
}