Pith Number

pith:ZWKH3YTX

pith:2021:ZWKH3YTXB3MC5HFXMPO5QZHJIY

not attested not anchored not stored refs pending

Improved Latent Tree Induction with Distant Supervision via Span Constraints

Andrew Drozdov, Andrew McCallum, Dylan Finkbeiner, Jay Yoon Lee, Mohit Iyyer, Shilpa Suresh, Subendhu Rongali, Tim O'Gorman, Zhiyang Xu

arxiv:2109.05112 v2 · 2021-09-10 · 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{ZWKH3YTXB3MC5HFXMPO5QZHJIY}

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	2026-07-05T03:27:58.649456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd947de2770ed82e9cb763ddd864e94617fd2582dffb60ffa972c6c327c8b3eb

Aliases

arxiv: 2109.05112 · arxiv_version: 2109.05112v2 · doi: 10.48550/arxiv.2109.05112 · pith_short_12: ZWKH3YTXB3MC · pith_short_16: ZWKH3YTXB3MC5HFX · pith_short_8: ZWKH3YTX

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/ZWKH3YTXB3MC5HFXMPO5QZHJIY \
  | 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: cd947de2770ed82e9cb763ddd864e94617fd2582dffb60ffa972c6c327c8b3eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c789186e132c53ddd8cac1692854b36bde3dd42e5258e0dabc88a106ac951f9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-09-10T21:22:09Z",
    "title_canon_sha256": "d54580c0eea4866bc916ea96a1378dcb6e353dd8b40ff398274fad483e2cd975"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.05112",
    "kind": "arxiv",
    "version": 2
  }
}