Pith Number

pith:FVOP4PEL

pith:2020:FVOP4PELTCY72CWE7QWHXVIIU5

not attested not anchored not stored refs pending

LTP: A New Active Learning Strategy for CRF-Based Named Entity Recognition

Mingyi Liu, Tonghua Su, Tong Zhang, Zhiying Tu, Zhongjie Wang

arxiv:2001.02524 v2 · 2020-01-08 · 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{FVOP4PELTCY72CWE7QWHXVIIU5}

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.

Cited by

1 paper in Pith

When Active Learning Falls Short: An Empirical Study on Chemical Reaction Extraction

Receipt and verification

First computed	2026-07-05T01:31:02.843299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d5cfe3c8b98b1fd0ac4fc2c7bd508a76fc2e0dee82d53c687982eee8b371f3a

Aliases

arxiv: 2001.02524 · arxiv_version: 2001.02524v2 · doi: 10.48550/arxiv.2001.02524 · pith_short_12: FVOP4PELTCY7 · pith_short_16: FVOP4PELTCY72CWE · pith_short_8: FVOP4PEL

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/FVOP4PELTCY72CWE7QWHXVIIU5 \
  | 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: 2d5cfe3c8b98b1fd0ac4fc2c7bd508a76fc2e0dee82d53c687982eee8b371f3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ce25389ee2ecf7ca27d5da08358e90c4535c8c196b36a6b8011e69a173839d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2020-01-08T13:44:10Z",
    "title_canon_sha256": "ecf26b5a9147ba8d30861911b07bbd32288bbea52397a9a607cd04cb5ae996b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.02524",
    "kind": "arxiv",
    "version": 2
  }
}