Pith Number

pith:M5F5WRCG

pith:2014:M5F5WRCGQ7ONN23P2C6PLG7FYG

not attested not anchored not stored refs pending

A Robust Transformation-Based Learning Approach Using Ripple Down Rules for Part-of-Speech Tagging

Dai Quoc Nguyen, Dang Duc Pham, Dat Quoc Nguyen, Son Bao Pham

arxiv:1412.4021 v5 · 2014-12-12 · 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{M5F5WRCGQ7ONN23P2C6PLG7FYG}

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	2026-05-18T01:10:43.195825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

674bdb444687dcd6eb6fd0bcf59be5c1880b982e532ebf340905e5ab05d11075

Aliases

arxiv: 1412.4021 · arxiv_version: 1412.4021v5 · doi: 10.48550/arxiv.1412.4021 · pith_short_12: M5F5WRCGQ7ON · pith_short_16: M5F5WRCGQ7ONN23P · pith_short_8: M5F5WRCG

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/M5F5WRCGQ7ONN23P2C6PLG7FYG \
  | 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: 674bdb444687dcd6eb6fd0bcf59be5c1880b982e532ebf340905e5ab05d11075

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c5fa019ae30ab30379aeeb6f4e349c316d0013fea7c619b4c9f85be5211adfc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2014-12-12T15:26:43Z",
    "title_canon_sha256": "fa63c105d81e473431b1cff7110e5d68c5fa8bb27e3cf30bd66efc9448daf732"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4021",
    "kind": "arxiv",
    "version": 5
  }
}