Pith Number

pith:QIURA5QN

pith:2014:QIURA5QNTHFYO232KTFM67SPSG

not attested not anchored not stored refs pending

Incorporating Semi-supervised Features into Discontinuous Easy-First Constituent Parsing

Yannick Versley

arxiv:1409.3813 v1 · 2014-09-12 · 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{QIURA5QNTHFYO232KTFM67SPSG}

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	2026-05-18T02:42:54.621048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

822910760d99cb876b7a54cacf7e4f9188ac876c46216c653829642350d12a90

Aliases

arxiv: 1409.3813 · arxiv_version: 1409.3813v1 · doi: 10.48550/arxiv.1409.3813 · pith_short_12: QIURA5QNTHFY · pith_short_16: QIURA5QNTHFYO232 · pith_short_8: QIURA5QN

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/QIURA5QNTHFYO232KTFM67SPSG \
  | 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: 822910760d99cb876b7a54cacf7e4f9188ac876c46216c653829642350d12a90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afa978465b5e6ab0abf06556f473ed844d29a6c565a58b04616b9570429b9d5c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2014-09-12T18:37:35Z",
    "title_canon_sha256": "9443263ff9d94d44bfad767a9353d5baa5cf2da5ab5c8f060265791449098f03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.3813",
    "kind": "arxiv",
    "version": 1
  }
}