Pith Number

pith:L2XDFOY6

pith:2019:L2XDFOY6BWEFJ6AQOMQU7G5Y57

not attested not anchored not stored refs pending

Predicting Annotation Difficulty to Improve Task Routing and Model Performance for Biomedical Information Extraction

Ani Nenkova, Byron C. Wallace, Chris Tar, Oshin Agarwal, Yinfei Yang

arxiv:1905.07791 v1 · 2019-05-19 · 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{L2XDFOY6BWEFJ6AQOMQU7G5Y57}

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	2026-05-17T23:45:48.464843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eae32bb1e0d8854f81073214f9bb8eff8328d9c5d6c3fdc9c4eeda641554d7e

Aliases

arxiv: 1905.07791 · arxiv_version: 1905.07791v1 · doi: 10.48550/arxiv.1905.07791 · pith_short_12: L2XDFOY6BWEF · pith_short_16: L2XDFOY6BWEFJ6AQ · pith_short_8: L2XDFOY6

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/L2XDFOY6BWEFJ6AQOMQU7G5Y57 \
  | 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: 5eae32bb1e0d8854f81073214f9bb8eff8328d9c5d6c3fdc9c4eeda641554d7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c7dc89f4e1a22bb2ec5c2ffb84dbf68899db3a0ca6e2b7bf7ace09f3a25d2cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-05-19T18:28:34Z",
    "title_canon_sha256": "9ffbae7d07d331fabd33a01d678dd7c2797d12d448065fc23ee8558a5846b42a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07791",
    "kind": "arxiv",
    "version": 1
  }
}