Pith Number

pith:56KMIKLT

pith:2018:56KMIKLTYGDV2FGJ6X6D7ICCXM

not attested not anchored not stored refs pending

Improving Span-based Question Answering Systems with Coarsely Labeled Data

Ankur Parikh, Hao Cheng, Kenton Lee, Kristina Toutanova, Michael Collins, Ming-Wei Chang

arxiv:1811.02076 v1 · 2018-11-05 · 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{56KMIKLTYGDV2FGJ6X6D7ICCXM}

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	2026-05-18T00:01:25.099161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef94c42973c1875d14c9f5fc3fa042bb07c79aba22a11caddd00dce316ed0632

Aliases

arxiv: 1811.02076 · arxiv_version: 1811.02076v1 · doi: 10.48550/arxiv.1811.02076 · pith_short_12: 56KMIKLTYGDV · pith_short_16: 56KMIKLTYGDV2FGJ · pith_short_8: 56KMIKLT

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/56KMIKLTYGDV2FGJ6X6D7ICCXM \
  | 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: ef94c42973c1875d14c9f5fc3fa042bb07c79aba22a11caddd00dce316ed0632

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fa5530e21f946ac6cbaf323b8051c49b2ed0bd02d02fb6e85c4798b9c2a1bf2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-11-05T23:03:02Z",
    "title_canon_sha256": "b63f4903901566195c803493ef3f587b2962079dcfef31fdc69265ea718b6c79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.02076",
    "kind": "arxiv",
    "version": 1
  }
}