Pith Number

pith:XPXDTMXE

pith:2019:XPXDTMXEV4O5ESM4ZWZOOWYZV6

not attested not anchored not stored refs pending

HiExpan: Task-Guided Taxonomy Construction by Hierarchical Tree Expansion

Brian M. Sadler, Chao Zhang, Dongming Lei, Jiaming Shen, Jiawei Han, Michelle T. Vanni, Xiang Ren, Zeqiu Wu

arxiv:1910.08194 v1 · 2019-10-17 · cs.CL · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPXDTMXEV4O5ESM4ZWZOOWYZV6}

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	2026-07-05T00:13:06.180229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbee39b2e4af1dd2499ccdb2e75b19afaca3b944263d63a078c04d5926355d91

Aliases

arxiv: 1910.08194 · arxiv_version: 1910.08194v1 · doi: 10.48550/arxiv.1910.08194 · pith_short_12: XPXDTMXEV4O5 · pith_short_16: XPXDTMXEV4O5ESM4 · pith_short_8: XPXDTMXE

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/XPXDTMXEV4O5ESM4ZWZOOWYZV6 \
  | 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: bbee39b2e4af1dd2499ccdb2e75b19afaca3b944263d63a078c04d5926355d91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40f9f0029df85cfcc2fb43bf76269abcdc54190aa444f36e5cca1e354adfff48",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-10-17T23:02:34Z",
    "title_canon_sha256": "4af0e563239277f4e4c1a791aed0c551550c5d23b918c1b9fc8e19fadfd62168"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.08194",
    "kind": "arxiv",
    "version": 1
  }
}